I'm sure you've gotten your answer as far as lowering your truck back down for towability. However, my wife and I fulltime in a 36' fifth wheel. I've never pulled a travel trailer so I can't speak to it but the fifth wheel does pull very nicely with my 04 350 Dually. I would caution you though to do a serious amount of research about which rv brands your interested in. We went with Keystone and after a year are already looking to trade in for something a little better built. Also if your interested in the Andersen Ultimate Hitch for a fifth wheel, I have one for sale. Granted its designed only for a recessed ball. Let me know if your interested. Look into Grand Design they seem to be made pretty good for full timers. Good Luck