Hey everyone. I'm looking for a relatively inexpensive bike to use for mainly dirt jumping, and maybe a little bit of street riding. Here's the catch though...I'm a small framed girl who's 5'3 and 110 lbs (and done growing), so I want something with a short top tube. I was guessing about 20.00", but if that sounds radically wrong for my size, please tell me before I buy something wrong. I checked the completes on Dan's and it seems like nothing small is full chromoly. I don't have a real budget in mind because I'm not even sure if the bike I'm looking for exists and I'll pay a little more if it means getting a bike that fits, but the closer to that $300 mark the better. Thanks.