As embarassing as it was asking the questions I did in the OP, this has been EXTREMELY helpful. Like I said, you guys were once me, super clueless. Someone taught you, and now you are teaching me. Man I feel like I already know so much more about horse trailers that the people at the expo won't think I'm a -complete- idiot, just 1/2 an idiot, haha. Thanks guys!
Braver the person that asks for advice. :)