Just gonna throw out another option for ya - the Wagoneer L. Has all the space you need, and with the tow package, it has a GVWR of 10k lbs, easily class-leading. We towed a 31 ft, 6500 lb trailer with my wife's Wagoneer last summer in the 100+ degree heat. It pulled easily with no issues whatsoever. The air ride suspension was great and auto-leveled the vehicle after attaching the trailer. Having said that, the Wagoneer is a turbocharged straight 6, so I understand if you're trying to get away from a turbo 6. I went for the 5.3L V8 on my Yukon XL that should be getting built next week, and it'll be our travel vehicle (we typically tow a camper once per year, though possibly will add another trip or two as the kiddos get older). I figured it's tried and true and should be able to manage what we need. Anyway, just some food for thought!