With a trailer that size, you can probably add about 1500 lb to the factory weight, to get the weight you will be towing. If you take the kitchen sink and tow with a full water tank, it could be more like 2000 lb. 10-15% of the total weight will be the tongue weight of the trailer, and that is part of the cargo of your truck.
So estimating 8500 lb for the trailer, and 12% tongue weight, that is 1020 lb of cargo. You still have things to put in the truck, plus passengers. So add all that up and see if you exceed the cargo capacity of the truck. The cargo capacity of the truck is more likely to be your limiting factor than the tow rating.
Even if you are within your cargo capacity, you have a long trailer for that truck, and you need a really good weight distribution/ sway control hitch system. That is very very important!