[bushpilot]

quick answers - you can drive a class 7 or 8 w/out a CDL (assuming its property titled, non commercial or as an RV).

its likely your regular drivers license will need some additional endorsements. for example - in texas if it has air brakes you're supposed to have a Class B (for Air Brakes) endorsement.

I believe to convert title to an RV most states require the vehicle to have a potty (cassette is what most use), a fridge or hot plate & a bed - don't quote me on that (the guys over at Escapees forum will have the precise details).