what class RV

If you're in O'Fallon, Illinois and you register it as an RV it is going to require a Class B non CDL. If you pull the stacker trailer it is going to require a Class A non CDL.

It depends on the state you live in what license is required. In for example in Washington state noncommercial privately owned recreational vehicles require no special license regardless of weight.

I would not class it as a super C. I think it should be in a different class as it is basically a tow vehicle.
Renegade Toter

Super c but I think they have their own class

air brake endorsement, plus what is required by your state being over 26000 lbs.

I would have to say it's a Class C for it's cab and overhead, but some might call it a Super C for it's heavy duty truck chassis.

I'd say a Super 'C' class.