Just for your general information only. I once owned a well made non aluminum R-Vision Trail Cruiser rear Bunkhouse (BH) model with a permanent queen bed up front. The trailer was 28 feet long and weighed 4500lbs plus when fully loaded and towed great behind my 2001 Dodge Ram 1500 V8 on the plains of Texas.
However I towed the same trailer in the Rockies and west coast mountains with a larger 2002 Ram 2500 V10 4x4. Both trucks had 16 inch wheels and I used Equalizer WDH. Although my Ram 1500 was authorized to pull a 6000 lb trailer I would never and did not attempt to pull the this trailer in the mountains with this truck.
Except on delivery one will never pull a empty dry weight trailer so the dry weight is only a starting point as one will add water, propane, personal items, food, drinks, bedding, etc., etc,. to the dry weight of TT.
In addition to the authorized gross combined truck and trailer load limits and hitch limits even with WDH one must not exceed the load limits of the current tires and wheels on the vehicle plus total gross weight of the vehicle per axle with driver, passengers, fuel and other items included. I used the much stronger LT truck tires with load rating of E on both trucks.
CAT scales at truck stops are your friend.
This information may be useful to others if not the OP. Cheers