See how much payload as well as allowable tongue weight you can haul with a Tundra. ( this is not a dig at Tundra's as TV's )
Tongue weight and payload of TT's are tricky numbers.
Ex: my TW (advertised dry wt) is approx 500 lbs. After i load it up, i put it on my scale and i can sit at approx 850 lbs to 900+ , depending how i pack the trailer as well as gear i carry in the trucks beds rearward of its rear axle. Gear that you carry in the trucks bed also gets calculated.
Point being, a TT that sleeps 8 may be heavy , depending on the floorplan and all the gear that 8 people require. Weight will creep on on you, you just have to be careful and keep your 'real weights' in check when towing with a 1500 type truck.