I am shopping for a bike to start commuting to work and class, my one way trip will be just over 5 miles, around campus and work probably less than a mile, and back home again. So we'll say about 11 miles per day of use. I can't really afford an expensive top brand. What I've been looking at are the Schwinn and GMC bikes at Wal-Mart. May not be the ideal place to shop for one, but I'm not experienced in what to look for... I suppose what I'm looking for is something under $200 and at absolute maximum of $250 that can handle a daily commute of 11 miles, anywhere from 1-2 days per week, up to 5 at the maximum. I'm 6' tall, and a little over 200 lbs. Any suggestions would be great! Thanks!