As feared, the rear window, attempt #3, did not have near enough glue, and came out with very little pressure. Aaargh!
So, we decided, after a day off to cool down, to try the fourth window with lots of extra adhesive and hope my masking tape job held out. Today, I unwrapped it and success! Near perfect!

Exterior view with no gaps in the glue

Inside view - nice clean white line between window and interior paint
The only flaw in the job was one spot small section where we pulled too hard on the window with the tape holding it in place and the glue was pushed out, so the fiberglass underneath is showing. That will not impact the overall strength though, small areas like that are okay.
So now I just have to order another window to finish up.
I moved on to the landing gear. Check it out:

Brake assembly mounted and waiting the brake line

Ready for landing
I can drop the airplane for it’s first landing now any time. I will wait until I finish the wheel pants, which is coming up next, since you have to have the wheel off the ground for that.
Making progress again finally!