Do you travel with just you in the vehicle? Remember to get an accurate tow rating you should load up like your going camping and hit the scales. Subtract acaled weight from the GVWR on the drivers door post. That is how much you have for hitch weight. Trailers hitch weight will be 12-15% of its loaded weight, NOT the dry weight.
Now to add more confusion to the mix, think about trying to tow a 4000 pound sail boat down the road with the sail out! Thats how towing a solid wall trailer will be.
Personally I think you will be far happier towing a tent trailer. But thats just me