Just remember that the "tow rating" is based on a vehicle that has no additional passengers or stuff loaded in it and also assumes you won't exceed the vehicles other weight limits either.. I imagine you will be taking a passenger and some stuff along..
So, you can't load the vehicle to the gills and still expect to tow something even close to it's "tow rating"... ;)
My 22' trailer had a 'dry weight' of around #3400.. It now weighs every bit of it's #5000 GVWR and then some..
My guess is the trailer you have in mind probably has a GVWR of over #6000 and while it's true you might not ever get it to that weight, but let me know how the wife feels about having a ton of storage space and NOT being able to use it.... ;)
Ever take a look at your home closet if you share it with your wife.... ;) After 12 years with the same trailer, every nook and cranny is stuffed with something! :) (I'm just as guilty of stuffing it with stuff too, so it's not all the wife.. :) )
Good luck!
Mitch