Cool trailer. I'd love to have one. If it was me I'd get some chains and make brackets to lock everything down from thieves. I worry a bit about leaving things on my truck when I'm doing a lawn and I'm working in the back yard.
Oh and a heavy duty clutch and the best brake pads you can afford might not be a bad idea if you're pulling it a lot w/ a car.
I bet you're gonna love that ramp