According to the specs online, the Denali has a 600# dead weight hitch rating. These trailers with the large deck on the front are in general somewhat light in the front end which contributes to sway problems. They design the trailer so that the weight of a 4x4 or a couple of motorcycles will help offset the light tongue weight. Pay attention to where the various water tanks are (ahead or behind axles) as water weight to the rear will lighten the tongue weight even more. It will be important to load your heavy items closer to the front of the deck.
If you go with a WD hitch, make sure the frame of the trailer is designed to take it and don't get too big of unit. I would think a unit with a 750# or 800# rating max would be more than adequate. Given the light tongue weight and depending on the WD hitch you get, you might need a friction control.
Ken & Allison
2 Camping Cats (1 diabetic)
1996 4Runner, TRD Supercharger, Edelbrock headers
2007 Fleetwood Arcadia, Honda EU2000i
4 mountain bikes, 1 canoe, 4 tents, 8 sleeping bags, 2 backpacks
(You get the idea!)