I vaguely remember your story about buying some land or something around the DC to put an RV.
Lots of RV dealers near the DC metro area. I have purchased RV's from Leos' and Chesaco is pretty large. There's a CW in Fredericksburg. Google is your friend here.
Loan qualifications are pretty pragmatic. Find an RV you think you can afford based on your income and approach a bank. All they can do is say no. Dealers probably have the best access to lenders to suit a variety circumstances. Go to a dealership, find something you like and run a credit check - ask for a soft pull. Pretty easy. Seems like there is a lot of swirl around this that is unnecessary. Go to a dealership and find out. very easy to get the answers you are looking for.