Bought a bolt on hitch works fine but the hitch I got is close to the bumper so putting the chains on is a pain. Also got the wiring module which was also easy to install. I don't remember where I got the hitch and wiring module but I got them from the internet. I checked under the hood and ours has a pretty big trans cooler. So I don't know if it is necessary to add another one.
I just had my trailer weighed and it is 1220lbs without gear. Probably add another couple hundred pounds with gear, food, and ice. Oh, ours is a 4-cyl