Hershey is a great show to view all the different gasser Model A's. Recommend going Weds and Thurs because the weekend is very busy. Pick out the model and floor plan you like and suggest bidding it out to 4-5 dealers. Don't need to buy from the local dealer because you'll be full timing. Also start thinking where you're going to setup your domicile/mailing.
If you're handy you could set up the Grand Cherokee for towing yourself. There's excellent Grand Cherokee specific videos to help you through baseplate and wiring installations. We picked the towbar below which is a reasonable price option to set up for towing and braking vs other avenues.