Published vehicle ratings are typically "optimistic", so the GVWR of 12,125 lbs and GCWR of 15,250 lbs that Tiffin shows in the Wayfarer specs are not very encouraging.
Subtracting the weight of your Jeep from the GCWR gives you a number that becomes you max allowable weight of the Wayfarer by itself, fully loaded for travel.
Load up for a campout and take the Wayfarer to a truck scale and see what it weighs. Maybe it will pencil out ok. Of course, the Jeep needs a braking system for while it is being towed, and you have to watch Wayfarer coolant and transmisson temps if you tow in hot areas or pull the toad up significant grades.
Pay attention to tow bar "flatness" angle if your Jeep is not stock. If you have a lifted rock crawler, the mismatch in hitch point heights will require an L-shaped hitch pocket plug-in that unfortunatly will apply bending moments on your 5k rated receiver hitch. The hitch rating is intended for reasonably "flat" connnections, so the de-rating for that circumstance would diminish the already small margin, given the Jeep's weight.
If it all wotks out on paper, that is a start, but it still has to be tested and experienced by you for basic driveability. Get it together and go for some drives. Neighborhood and city streets first, turning corners at traffic lights, then highway it, and feel the push as a semi overtakes you. Good chance that your gut feel as you try it out will help you decide whether to go on with it or not if the "on paper" portion comes out.
I pray that you will enjoy happy and safe travels, always!
