Since you already have a French door in the garage, why NOT put windows in the door?
Also, I see you had perimeter shelving in your previous single car garages, so I'm immediately thinking you should consider doing the same with 2x6 framing to allow for task lighting on perimeter benchs ala THIS:
I apologize that I can NEVER remember this GJ'er's name but I ALWAYS remember his garage. Someone will come along and post his name then you really need to search his thread for details. The task lights as I remember them are very low cost big box items.
His methods of making the door slide was very simple and low cost too. All in all, one of the nicer garages here in my opinion.