only way to be sure is to weigh the tongue of the trailer, many times you can be surprised at a trailers weigh when fully loaded and ready to roll. also how you load the trailer, heavy front, heavy rear or balanced
trailer should have more weight to the front so truck does not bounce.
Toyota Tundra should be a fine Tow Vehicle
the tow vehicle rule:
tow no more than 80% of the maximum tow weight of the vehicle, remember pulling the load is not the major issue, its stopping the load when some fool pulls out in front of you, that is what stresses the truck and trailer.
good luck and stay safe.