Thanks to all of you even the ones just find it ridiculous to the idea of a heavier setup when a light one should suffice.But i believe i am going to go ahead with it,i think a metal frame 76"L x 36"W x 50"H with a tricycle type setup 20" wheels to even the weight and put less strain on the hitch,a triangle front to cut the wind should help, some type of light aluminum sheeting.Well that's about what i got for now,i will start looking in the frame forum see if i can find a shop that can build it here in NYC (prefer to leave that to an expert)if you know somebody let me know and then go from there.