bbobb: Welcome to iRV2.com!
Assuming each fryer is about 15A, the steam table is 10A and the warmer is 5A, A/C is 14A, you'll need 44A. I'm just guessing at the current requirements, read the nameplates on the equipment to be sure. So it looks like you'll want 50A service (note 50A service is really 100A, 50A for each leg). You'll also want a bigger generator (4000W = 33A max).
As far as doing it yourself, Ed has a point. I have no problem doing electrical for myself, but most likely this will have to be inspected by somebody so you can get a permit. If I were doing it I'd handle all the other jobs and let a pro do the electric.
Stewart, Brenda and kids
2008 Newmar Canyon Star 3410