Google-calendar – Time ranges in Google Calendar’s month view

First, you can save yourself a step by double-clicking on the event at your step 1., as this will go directly to 'Edit event details'.

But I suggest you reconsider use of the repeat option for the event. Say you want four identical events, but they occur in a irregular pattern of days. When creating the first event, choose "Repeat", Daily, Ends after 4 occurrences. Then, after you Save and end back in the Month view, find one of the events that is shown falling on a wrong day, and click-drag it to the right day. Do that for any other of the occurrences which are not on the right day. This should do the job. The occurrences are still (sort of) part of a repeat group, but the ones that were moved have a note about the change in their details.

When you are making the selection of weeks to show in the mini calendar, you can actually change the month with the mouse wheel while you click and drag (if the cursor is stopped while you use the mouse wheel, it may require moving to another day to pick the new month). This lets you create a calendar view several months long.