Go to the Dish for my RV website and look at the combinations. Since the antenna (dish) is powered by the receiver not all receivers will work.
I too would recommend the Winegard Pathway since you're on the east coast it would be best (better signal strength) if you can access the eastern satellite arc. On your trip you'll probably reach a point that the western arc is better. The bigger the receiving antenna the better the signal strength. On one of our TT I installed a dedicated coax for the satellite and use a VIP211Z receiver. On the other I used a satellite connection already installed and use a Wally receiver. The important thing is that the coax from the antenna has to run directly to the receiver.