Rated max tow capacity and total weight that is comfortable to tow are two different things. I’ve found that I generally try not the exceed 2/3 to maybe 3/4 of the max tow capacity (Loaded weight). I’ve found that when I exceed that driving and handling is a hassle, is tiring more anxiety causing especially on multi-hour drives. General handling diminishes, you need longer stopping/braking distances , tougher going up grades and mountainous roads, coming down ain’t any fun either and the list goes on. Not saying you can’t or shouldn’t tow at max capacity , just saying at the end of a long drive you’ll feel much more relaxed and rested towing 2/3 to 3/4 capacity or less.
Also if I’m towing 15000 lbs or more I prefer a diesel and a dually.
Finally when towing heavy go for more rather than less. A 1 ton would be best but a 3/4 ton with sufficient tow capacity will do just fine in your case.