Magento – Magento 2: How to override newsletter Subscriber model

I want to add 3 new fields in news letter popup for that i have written custom module. i am overriding Subscriber model and New Action Controller. But not able to call subscribe method of subscriber model.
and also getting error :

PHP Fatal error: Uncaught TypeError: Argument 1 passed to
Navin\Subscribe\Controller\Subscribe\NewAction::__construct() must
be an instance of Navin\Subscribe\Model\Subscriber, instance of
Magento\Framework\App\Action\Context given, called in
/var/www/html/jansport/var/generation/Navin/Subscribe/Controller/Subscribe/NewAction/Interceptor.php
on line 14 and defined in
/var/www/html/jansport/app/code/Navin/Subscribe/Controller/Subscribe/NewAction.php:33\nStack
trace:\n#0
/var/www/html/jansport/var/generation/Navin/Subscribe/Controller/Subscribe/NewAction/Interceptor.php(14):
Navin\Subscribe\Controller\Subscribe\NewAction->__construct(Object(Magento\Framework\App\Action\Context),
Object(Magento\Newsletter\Model\SubscriberFactory),
Object(Magento\Customer\Model\Session\Interceptor),
Object(Magento\Store\Model\StoreManager),
Object(Magento\Customer\Model\Url),
Object(Magento\Customer\Model\AccountManagement\Interceptor))\n#1
/var/www/html/jansport/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(93):
Navin\Subscribe in
/var/www/html/jansport/app/code/Navin/Subscribe/Controller/Subscribe/NewAction.php
on line 33

My code is:
di.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\Newsletter\Controller\Subscriber\NewAction" type="Navin\Subscribe\Controller\Subscribe\NewAction" />
    <preference for="Magento\Newsletter\Model\Subscriber" type="Navin\Subscribe\Model\Subscriber" />
</config>

NewAction.php Controller

    namespace Navin\Subscribe\Controller\Subscribe;

    //use Navin\Subscribe\Model\SubscriberFactory;

    class NewAction extends \Magento\Newsletter\Controller\Subscriber\NewAction {

        /**
         * @return \Magento\Framework\Controller\Result\Redirect|\Magento\Framework\View\Result\Page
         */
        protected $subscriberFactory;

        public function __construct(
        \Navin\Subscribe\Model\Subscriber $subscriberFactory
        ) {
            $this->subscriberFactory = $subscriberFactory;
        }

        public function execute() {

            //echo 'test come here';exit;
            $post = $this->getRequest()->getPostValue();
            //var_dump($post);exit;

            if ($this->getRequest()->isPost() && $this->getRequest()->getPost('email')) {
                $email = (string) $this->getRequest()->getPost('email');
                $subscriber_name = (string) $this->getRequest()->getPost('subscriber_name');
                $subscriber_date_of_birth = (string) $this->getRequest()->getPost('subscriber_dateofbirth');
                $subscriber_country_code = (string) $this->getRequest()->getPost('subscriber_countrycode');
                $requestCatalog = (string) $this->getRequest()->getPost('requestCatalog');

                try {
                    $this->validateEmailFormat($email);
                    $this->validateGuestSubscription();
                    $this->validateEmailAvailable($email);

                    $status = $this->subscriberFactory->subscribe($email, $subscriber_name, $subscriber_date_of_birth, $subscriber_country_code);
                    if ($status == \Magento\Newsletter\Model\Subscriber::STATUS_NOT_ACTIVE) {
                        $this->messageManager->addSuccess(__('The confirmation request has been sent.'));
                    } else {

                        $this->messageManager->addSuccess(__('Thank you for your subscription.'));
                    }
                } catch (\Magento\Framework\Exception\LocalizedException $e) {
                    $this->messageManager->addException(
                            $e, __('There was a problem with the subscription: %1', $e->getMessage())
                    );
                } catch (\Exception $e) {

                    $this->messageManager->addException($e, __('Something went wrong with the subscription.'));
                }
            }

            $this->getResponse()->setRedirect($this->_redirect->getRedirectUrl());
        }

    }

Subscriber.php Model

namespace Navin\Subscribe\Model;

class Subscriber extends Magento\Newsletter\Model\Subscriber {

    /**
     * Initialize resource model
     *
     * @return void
     */

    public function subscribe($email, $subscriber_name = '', $subscriber_date_of_birth = '', $subscriber_country_code = '') {

        $this->loadByEmail($email);

        if (!$this->getId()) {
            $this->setSubscriberConfirmCode($this->randomSequence());
        }

        $isConfirmNeed = $this->_scopeConfig->getValue(
                        self::XML_PATH_CONFIRMATION_FLAG, \Magento\Store\Model\ScopeInterface::SCOPE_STORE
                ) == 1 ? true : false;
        $isOwnSubscribes = false;

        $isSubscribeOwnEmail = $this->_customerSession->isLoggedIn() && $this->_customerSession->getCustomerDataObject()->getEmail() == $email;

        if (!$this->getId() || $this->getStatus() == self::STATUS_UNSUBSCRIBED || $this->getStatus() == self::STATUS_NOT_ACTIVE
        ) {
            if ($isConfirmNeed === true) {
                // if user subscribes own login email - confirmation is not needed
                $isOwnSubscribes = $isSubscribeOwnEmail;
                if ($isOwnSubscribes == true) {
                    $this->setStatus(self::STATUS_SUBSCRIBED);
                } else {
                    $this->setStatus(self::STATUS_NOT_ACTIVE);
                }
            } else {
                $this->setStatus(self::STATUS_SUBSCRIBED);
            }
            $this->setSubscriberEmail($email);
            $this->setSubscriberName($subscriber_name); //subscriber_name
            $this->setSubscriberDateofbirth($subscriber_date_of_birth); //date of birth
            $this->setSubscriberCountrycode($subscriber_country_code); //country code
        }

        if ($isSubscribeOwnEmail) {
            try {
                $customer = $this->customerRepository->getById($this->_customerSession->getCustomerId());
                $this->setStoreId($customer->getStoreId());
                $this->setCustomerId($customer->getId());
            } catch (NoSuchEntityException $e) {
                $this->setStoreId($this->_storeManager->getStore()->getId());
                $this->setCustomerId(0);
            }
        } else {
            $this->setStoreId($this->_storeManager->getStore()->getId());
            $this->setCustomerId(0);
        }

        $this->setStatusChanged(true);

        try {
            $this->save();
            if ($isConfirmNeed === true && $isOwnSubscribes === false
            ) {
                $this->sendConfirmationRequestEmail();
            } else {
                $this->sendConfirmationSuccessEmail();
            }
            return $this->getStatus();
        } catch (\Exception $e) {
            throw new \Exception($e->getMessage());
        }
    }

}