When I towed with my 1/2 ton (Flagstaff Ultralite) TT weighed in at 8700 Loaded,wet and ready to go, I did alright with E rated tires, Timbrens and Bilsteins. But no matter what you do you will still be towing a pretty heavy load with a light truck. My payload was about 100 lbs under the max. I would imagine you will have 1600lbs + in payload and that may be overloaded for your truck. Then there is the question about what the rear gears are. Towing near the limits really dictates that you know all your weights.
My best move by far was to step up to the 2500 series truck.