I am almost 19 in about 15 days and I am looking for my first bike. I originally was looking at a cbr250r for a good beginning bike and then was told by 2 people that this bike would be too small for me because I am 6,3 and about 205 pounds. So I started looking at 600s but my only problem is that I have never rode and a bike at all so I do not want to kill myself with the power. I feel I would be comfortable on a 600, but again am not sure if it would be too hard for me to get going on a mid range bike. I am taking a motorcycle training course/ safety course and that also gets me my license. What do you guys think, should I go for a 250 or a 600.