On a one time basis, I will be towing a 32' travel trailer. The trailer is totally empty and dry and weighs about 4,500 lbs. There will be about 200 lbs of cargo put inside near the front, so toungue ...
At the risk of repeating myself, beg or borrow or rent ALL of the equipment to do this the right way, even if it is "just one time". It's not gonna be easy to explain to the officers/insurance/judge/family that "it was just one time". That's all it takes. Be safe and keep others safe.