Motorhome vs travel trailer for cross country with pets??

I think you might be wise to go Class C with a small tow car. Class C's are not much harder to repair than any van and not having to move the animals all of the time would be much easier. If you are used to driving an ambulance that makes a lot of sense. I would caution you to look carefully for roof leaks etc. especially in the cab over bed area on a Class C. Many tend to leak there.