Life can take unfortunate and unexpected twists. Understanding our capabilities and learning to function within our limits can bring greater peace that trying to do otherwise. I commend you for making the hard decisions.
We really enjoyed backpacking, but have come to realize that we may have greater opportunities to enjoy the outdoors in the fiver. There may come a time when we see the need to move to a Class "C" or other rig, less labor intensive for set up, if we wish to remain on the road. Let me encourage you to take that creativity that you have and redirect it into new adventures.
Since you find yourself at this crossroads, you might try
www.RVSearch.com. I think they charge about $60.00 for a listing.
Please note that I tried clicking on the link and could not get it to work. However, if you type it in the address line of your browser, it will work. Some forums use a blocker to interfere with competitor's url's.