At 8300 pounds dry, you can expect to be more like 9500 pounds loaded for a long weekend with 1200 pounds of tongue weight. You should confirm what your receiver limit is as well as the truck's as equipped payload per he tire and loading sticker. I suspect that proposed TT will exceed at least 3 of your truck's ratings. And then there is the performance. What are your expectations? The 5.3L is capable, but its peak torque is over 4000rpm. Are you mentally prepared for towing at 2200rpm with 4000-5500rpm in those mountains? You are pulling two sheets of plywood through the air which takes a lot of base power. Any hill is noticeable.
6k dry is a good range for the most capable half tons and RVers. That will tow worse than a 9k boat.
