Is all up weight of 9500 lbs. too much for Tundra 5.7L?

MickyFan is spot on with his post. I am towing a trailer at about 6500 as it goes down the road and I feel as though I am right at my payload rating. I am fine with my setup and really like how the Tundra tows but we travel relatively light so I am not worried.

The Tundra is a towing brute as someone has stated. It is a half ton and that is the drawback. If I had to get something larger, I would look at a 3/4 ton and not another 1/2 ton by another name.