Mister0,
I wouldn't recommend folding the mirrors on a regular basis for several reasons. If the adjustment is loose enough to allow you to fold the mirror for parking every day, then it will likely loosen while riding. How to access the fastener for tightening has been a past topic of discussion.
On the other hand, if the adjustment is tight enough that the mirror stays in adjustment, it is too tight for you to fold in without risking breaking the fragile cast aluminum parts of the joint that are concealed by the rubber boot. That’s a hundred dollar mistake.
Goldwing 1800 mirrors are made to fold out of the way, much like an automobile, but the Connie’s mirrors are not. It’s best to adjust the Connie’s mirrors once, tighten the pivot point up if need be, and leave them alone.
I wouldn’t let that stop me from buying the bike. Fixing the door would be a better way to go. If you have the skills to do the work you may find a serviceable garage door that someone removed from their house for style reasons or because it needs one section replaced if you look on Craig’s list or check with a local garage door installer for usable doors he’s removed. You could also buy a cover for it and store it outside if you had to, but that would be low on my list of solutions.
I always carry my saddle bags. For commuting they are useful for rain gear, extra clothing for temp changes, work clothes, storing your riding jacket, pants and boots, lunch, computer or picking up some grub on the way home from work. Why would you want to leave them at home?