Brakes are air, it's not old enough to have the weird valves, all standard plumbing. Trick is registration, your asking state to let you off with a light/ cheaper registration, now don't you think we would all get that if we could.
Federal guidelines say trailer over 10000# requires CDL, 2 C bodies on a ultra light aluminum trailer is going to be over 10000#.
It is doable but not to practical. Depending on what engine is in it fuel mileage is either okay or in the toilet.
Sounds like a great idea, I like it. I have debated on buying a old moving van to make a race car hauler out of with camper living quarters, come home Sunday drop van hook to my covered wagon ready for work Monday morning.