Your rig is about 14 to 18 foot longer than mine, and I just towed from KY to AZ last year. Yeah, I know, big difference in length.
You'll be fine, if you're getting down around a 1/4 tank and see a truck stop, pull in.
Other than that, you'll be fine. Take it no more than a few tic's over the posted limit, and make sure everytime you stop to do a full vehicle inspection.
Walk around the trailer, check your tires (make sure they aren't heating up, and air pressure is good), check your bow and transom straps, check your hitch. Make sure your bearings are staying full of grease. If there is any elec question, check your lights and elec connection. Check the wheels on the truck, may also want to check the vital fluids.
On the road, just keep your distance and allow plenty of braking room (NOT
breaking room

)
Take your time and be safe.