Potential Full Timer - National Tropi-cal good choice?

Yes National is out of business, but I am sure the chassis is no different then all those Freightliner chassis out there on many different brands. You will have no problems getting service on a Freight liner chassis.

National is out of business is the only thing I can think of, so you will have an orphan coach.

Have an RV inspector look at it. Its a lot more than mechanical things. Its roof leaks, batteries, inverter/charger plumbing and everything else on the house side. Well worth the money.
Good luck.