You are still a little too young, but if you think you have a shot of going pro, you might want to consider it. However, DO IT RIGHT. STUDY YOUR ASS OFF. From what you said, your buddies do NOT sound like they know what they are doing. You do not want to ruin your chances of playing professionally by messing up your endocrine system by doing stupid, ignorent things. In the end its your body, its your choices; you will pay your dues.