Planning to get two undergraduate degrees from two different schools seems like a lot of trouble to go through, IMO. But more power to you, if that's what you want and you think you can do it.
I agree with everything Warren said, but this:
University experience is easily the most fun you'll ever have -- savor it.
What a depressive statement this seems to me. Apex of fun in your early 20s followed by a life of less fun? No way, not for me! Furthermore, it seems to imply that people who don't go to college will never have the same amount of joy as those who do, which is pretentious.
Go on and attack those classes, courtrigrad. Be relentless and victorious. While you're at it, tell your dean his/her classes are a little boring and that you'd like to make your own independent study courses. Maybe even assemble courses into a new program to make your own degree. It's been done before, but only for people who demand it.
You don't have to skip out on social life, either. If you can find the money, then you can skip out of flipping burgers instead, as well as that summer job. When everyone's gone home for the summer, and social activities are down, build a mountain of summer courses, then plant your flag on it. If it wasn't challenge enough, increase the course load for next summer.
If you come into University thinking that it's going to be the best time of life and that you have to savor it, I think it's clear that your expectations will be too high and you will spend the time disappointed. University is a lot of B.S. If you want to cut through it, I say don't just cut through it, cut it down. Leave the University a different place.