A 5.7 litre double cab Tundra is rated to pull about 3000 lbs more than the Sequoia. Has the same front half, so has about the same comfort level.
Big question to ask yourself is: after you load all your people and stuff in it, what will be the remaining payload? Load it up with everything and everybody you will take camping, including a full tank of gas, and take it to a CAT scale. Then you can make a more informed decision on how much trailer you can tow.
2012 Toyota Tundra 5.7 Litre DoubleCab
6 speed, 4.30 Limited Slip, Tow Package
2013 Jayco White Hawk 27DSRL
2010 Jayco JayFlight 26BH sold
Yamaha EF2000is Generators (2)
1996 Honda CB750 Nighthawk