I would invest in a tow hitch receiver 2" type. someone who knows the classifications chime in. if you were just going a few miles its on the margin, but theres alot of snafu occuring between NY and TX, this will also let you level the trailer to the truck, which keeps the "tail from wagging the dog" make sure you have the engine FORWARD on the trailer so you get enough tongue weight. have you ever towed before?
I see you are from NY, if you already have a tow hitch, if its "OE" equipment, make sure its not rusted out (sometimes looks like delaminating plywood if its real bad)
Don't drive in OD, you'll kill the tranny. DO consider at least tranny and oil changes before and after a tow that long, heat kills, questionable tranny fluid not good. Check brakes & Pads, not an option.
try and "highway it" as much as possible, plan on not going fast AT ALL if you go straight through the mountains, if your in a rush, you should have taken another day off. make sure you don't tailgate, you can't stop fast, don't drive like you can.
If you DO end up on mountain highway, try to keep it slow on the downhills, pull off often off and on, to let brakes and nerves cool. DON'T be in the left lane on long uphill stretches, its not your lane today.
stay out of overdrive.
stay out of overdrive.
stay out of overdrive.
those are the basics.