Getting to start kicking tires

I'm getting ready to start kicking tires in the Roseville, CA area on Transits.

The goal is to use it as a junior Class B RV for photography road tripping and living

I think my must-have features include:

-dual batteries
-highest ceiling
-no ford sync
-no fancy exterior features

TBD

the rear doors that swing out all the way back, like AmPickers, but I think it only comes on the longest frame, but I'd prefer the medium length frame.

dual sliding doors

which side mirrors, not sure

which engine

upfit questions

I know nothing right now about converters, generators and such. I will need the ability to power a small fridge, microwave, cooktop with the ability to charge ebikes and computers

Figuring out if I should have a sat dish installed or not

won't have shower/commode

ideally, there would be some kind of roof rack with flat aluminum panel for me to stand on and set up a tripod

front winch, perhaps