I'd consider getting the largest model that fits your needs and still has two axles. We are currently 38' and have used this coach all over from state parks to RV parks. The triple axle units will fit on the right site as well, the issue is the turns required and backing to get in there.
You get squeezed at the entrance to most state parks (in Fl) and usually are navigating around trees right on the edge of the road making it physically impossible to back into some sites.
I'm using a long bed now and just came out of a mega-cab. I'm noticing the extra two feet or so on tight turns.
