I'm planning on buying a bike once I move to Chicago and I really like the look/style of bmx bikes. I was wondering if it would be okay to use one to just ride/cruise around the city. Chicago is pretty much flat so I won't have to worry about hills really. Not planning on doing any long distance riding really, and you can take bikes on the train in Chi if I wanted to go somewhere else. I'm 5'11 and around...175 pounds-ish. Average size I guess. Knowing what inch bike I should get would be nice too. Thanks, let me know. 