Retried Teamster
after 43 years of driving an 18 wheeler I know the law
Then you also know about getting goofy directions or making a wrong turn and having to disconnect a set and re-hooking when everything gets turned around. What ever you do make sure front box has a strong enough hitch. You'll need a strong back bumper that most RV's don't have. Going to take some welding and design to get something strong enough. And don't spare on a good GPS. Several times my so called good GPS gave wrong directions. I had to "blind" side out of dead end onto a busy street couple months ago. I now confirm on google maps to make sure booth GPS and Map program) agree with each other before starting trip.
Personally I'd choose my toys carefully and not pull a set.
By the way, Sure is fun waving at the scales as I go by now days.
But if your convinced about doubles, there has been postings in the past of people that have made their rear bumper strong enough to pull with. Probably find them using the search function.