Interesting. So many similarities. I live in CO so I traverse passes every summer. My TT is 7100 lbs dry ( really a fictitious number) and GVWR at 9500 lbs. When I go boondocking at 9500 feet, my loaded weight is 9100 lbs. And, my TT is a 26BHS, total length point to bumper is 30.5 feet, good bit less than what you are looking at.
The clincher for this story... we also have a 2010 Sequoia Ltd. That is my wife's vehicle she had to have to pull our TT. I have driven that combo of our loaded TT up and down the OR coast into northern CA, once. Since that experience, I've purchased a modern 1-ton SRW CC diesel truck and that is what tows our TT now. Granted, I also now bed load a 850 lbs ATV in my truck, pulling the TT over passes at 12k feet but the combo is a dream.
Something you need to know about the Sequoia, 2010 was a stellar year for tow capacity on that chassis. Although the other responders are dead-on with paying more attention to your payload, take a look at the tow capacity for the 2011 Sequoia platform. Automagically, the tow capacity dropped by a SIGNIFICANT margin all while the 2011 Sequoia platform didn't change at all from the model year 2010. Big OOPS by Toyota.
Having said all that, if you do move forward with that combo, you will know the true definition of white knuckle driving. Been there, done that! I don't believe you could find a closer comparison to what you're looking at.
