[rhagfo]

While I would rather see someone towing a lite 30’ 5er and be slightly over GVWR and still within axle and tire ratings, than towing a 30’ TT. The reason is much more stable towing package.
In the OP’s case he will not be too happy getting near max tow rating with 3.55 gears. Then there is thee 1,500# payload, just not enough to get pin, hitch, and people even if you go over a couple hundred pounds.