Since you already had an RV, I will make a more general suggestion.
We have a couch/table setup and LOVE it. I didn't see that in any 24' or smaller unit I looked at. We bout a 26' because it's a GREAT size for two people, will comfortably fit up to 3 or 4 guests and you can still fit that size on a typical driveway. Any bigger and parking starts to become more difficult in town. Make sure you buy with a generator, or haggle down so you can get one.
I imagine you know that the kiss of DEATH on a class C is a severely rotted out cabover. Whatever you buy, make sure you have gone through the cabover and don't see any visible rot.
Jose