OK I got nothing looking to full time RV in Seal,TX in about 3 years with a little travel. I am looking to get a Grand Design "single"toy hauler, As far as towing looking for Ram 3500 daully not sure...
Buy the truck 1st. My recommendation, get the biggest you can afford, then it won't limit you in what RV you can get. Take a look at the truck in the signature. With it, I knew that I could tow anything on any RV lot.
Sounds like you are looking at a 376TH? We have a 385TH and overall it has been a great experience.