I have a 16' trailer with 4' sides on it, 3 trimmer rack, cooler holder, treated floor, box on side for gas cans and a 2' x2' box up front. All 5 tires and wheels in great shape as well as the trailer.
It even already has the mounting welded in place on each side and the back gate for your signs.
Only problem is I am in Oklahoma but would be willing to work with you if you are interested. Make me an offer.