New to trailer Life ordered new Truck and TT

With a new TT you will likely have a black tank rinser built in to the unit. Get another general purpose hose and a Y with shutoffs for the water spiggot to be able to hook up both hoses. Do not use your fresh water hose for rinsing your tank. This also enables you to rinse your sewer hose before storing it. You should also pickup a clear fitting for your sewer connection to observe if the tank is running clear and thus empty and clean. I set up like this.....Y to the campground water spiggot first. one side gets the water filter and fresh water hose to the trailer, other side gets a anti siphon valve then the general purpose hose with a spray nozzle which is kept coiled up on the ground and I use that for various rinsing needs and tank rinsing when I dump my tank. You will be fine with your tow setup. I have a Silverado 1500 and tow about the same lbs as you and I have no problem. If you get some wiggle(not sway)in the rearend of the truck when you're towing its likely the tires. I had that problem and advice on here was to air up the tires to their capacity listed on the sidewall. That solved it.