I thought I decided on a TT, Now studying Class C

Have you ever spent time in an RV? If not, I suggest the smallest investment you can get away with and still be comfortable. In your case, since you have a tow vehicle, that would be a small tt. However, if you really think a C is the way to go, check out cruiseamerica.com or some of the other rental companies. They sell their rentals at very good prices. The rentals come with maintenance records and one year power train warranties.