When I was 13 a friend and I did a two week self-supported tour. We rode anywhere from 100-120km a day with 30 or 40 lbs of stuff on our bikes. The whole trip cost us peanuts and my folks just made me call home every day.
Being a college student, why don't you tune in to your sense of adventure and organize something for yourself? You don't need a company to tour, that's the beauty of cycling. Really it just requires you and a bike!
Seriously, you can find a partner to do this with all sorts of ways...and then you can buy the equipment with the 2 or 3 grand you'll save by doing it yourself.