Take good notes and ask the dealer to demonstrate everything. Ask lots of questions. Welcome to the forum, I can't answer your questions other than a tow vehicle, and my advice is to get one bigger than you need. My 1/2 ton does fine, however I want to upgrade to a 3/4 ton diesel. I'm sure some of the others can answer your other question.
Ron, Barbara & rescues Beamer (Lab mix), Buddy (Cavalier spaniel), Ruger (Golden retriever), Stanley (Bassett/Springer mix) and 3 grandsons
2012 Jayco Feather 29L BH
2015 Chevy 2500 HD Duramax and Equalizer WDH