We are looking closely at the Jayco 28.5 RSTS and have some concerns about the weights. We will be towing with our 2016 Ram 2500 4x4 crew cab with the 6.4 Hemi and 3.73. Max tow for the truck is 126...
I tow the same rig with a 2500HD silverado. I think my max tow is 10200. I have no problem we have done over 15000 miles and 7%-9% grades to 8000' elev. I have tembrens, Rancho 9000 and put a larger trans cooler. I don't think you will have a problem at all. With all that said next truck will be a diesel for the power to climb out west here and the new engine brakes for going down the other side.