I really avoided your original question
It's a lot of money even at that price so you need to be sure. In my part of the world another $10,000 in tax would be payable. You seem to have done your homework and know you want a Class B. The missing piece that will help the most is the trade in value. I suggest calling a few dealers to get an idea of the trade in value. Even a ballpark figure will help.
Also, if there's at least a very good chance that you think you can make this unit work for your needs then that makes the decision easier. If you already know that it won't work out and expect to trade it in I would avoid that. I remember getting some ridiculously low trade in numbers on a 2 yr old unit Chevy based Class B.