Milo you will be gold with that setup but set up right the diesel jeep should be also as others have done this with good results. I would want the LS differential with a 2WD. fwiw many grades out west require tire chains on 2WD when the flashers are on due to road conditions at the higher altitudes.
My 3.92 gear Big Horn QC 6.4 bed 4WD is rated to tow 8,800. Its GVWR is 6,950 as delivered weighed 5,501 so say 1,450 payload. But I've been on state scales near the 7,800 combined axle weight and the truck would climb decend handle & stop well. In fact safely useing tune with brake, no sway WDH, & axle to frame airbags well & better tires. For safety I do watch to not exceed individual axle & CVWR.
It sure is an efficient engine. Three years running now a Wards top ten engine award winner. Have over 233k on mine now well over half of which with a trailer in tow. Repairs a light switch at $104 & a lift pump at $158. Happy streamin
Delivering Airstreams from Mfg 2 dealers RAM EcoDiesel factory brake controller, tow mirrors, hitch camera & receiver 1,290/12,000, Andersen 4" drop/rise no sway WDH, TLC axle to frame air bags mini compressor, GDE tune w turbo brake, SLT Grill, 31.9" load tires, Max RAM 1500 GCAR 7,800, GCVW 15,950