The front axle weight is going to be around 7,500 - 8,500 pounds.
Most trailers have a hitch weight around 1,500 pounds maximum, so you would need a really big truck to tow a motorhome that had been converted to a trailer. Also a second rear axle would be required to carry some of that weight.
You probably would never find a willing buyer for the RV if converted, and might not be able to finance the "RV" once converted.
The engine and transmission are worth about what someone would have to pay to get one out of a F-350 pickup, or about $2,500 at a junkyard, they are full of them for that price.
Re-converting back into a motorhome would be really expensive too.
Best option is to find a similar layout in a travel trailer or fifth wheel, and trade in for that.
HorizonRv.Com should be able to provide you a estimate to build you anything you wanted. However what you have will be less expensive than a custom RV that they can build to your specs.
Right now you have a pretty well built class A, and it's maintenance costs are not that much more than a travel trailer and truck. If you are really worried about the cost of gas or something, then the truck and trailer are nearly as expensive per mile as the class A. As for insurace, you can stop the liability insurance on weeks you are not driving the coach, so it can cost as little as $100 a year to insure it. Just tell them when you plan on taking it out, so you get coverage before you drive it again. Then stop for the 2 weeks while in a campground, and start it back up on the days you plan on driving home.
Fred.