LIke ALL things great and small......where is the dry weight of the trailer from? Brochure? if so, do you have AC, awning, one or two batteries, etc. As that dry weight is probably plus 500-750 lbs with options......NO ONE, travels with Zero gals of water. You will have 10 or so just between the hot water tank, lines, and something in the water tank......MOST of us unless were are not using the black or gray tank for months, will put 1-2 gals of water and the deodorizer in the same stop as we dump at......
500 lbs in trailer of stuff......hmmmmmm.....there is a moderator on here that weighed EVERYTHING going into his new trailer. Figured it would be 600-800 lbs. He was closer to 1300 lbs! That is for two people!
Reality is this. That trailer will probably tow just fine behind that truck. Will not be over the gvwr of the truck, nor axel limits. If you travel to the 10000' range in the rockies, it WILL be slower than at sea level, but with 300+ ponies, if willing to let the motor rev into the mid 4000-5000 rpm range, a 6 sp trans, you will be moving forward. Not at 60 mph mind you on a typical 3-5% freeway grade, but probably in the 40's in the gear below direct ie 3rd.
Unless something else says do not buy it. You will be safe towing that trailer with it!
Marty
92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
2014 Chevy 1500 Dual cab 4x4
92 Red-e-haul 12K equipment trailer