The biggest issue I see for you is the receiver rating. IIRC Nissan rated the max tongue weight at 940 lbs.
7,100 lbs dry will be 8,000-8,500 loaded. 8,500 x .15 = 1,275 lb tongue weight. Now that's about a max and if you can get close to 10% you would be in the receivers rating..just most TT's land in the 13-15% tongue weight range.
I personally think you would be better served by a 3/4 ton truck. That way you don't have to count the potatoe chips in the truck.
The Titans are really nice trucks and should serve you well otherwise, if you can manage the weights.
Thanks,
Jeremiah