I agree with Red02FXST
I would advise one thing. If you do buy one, just RIDE the thing
Don't let anyone tell you that you MUST modify it in any way. Once you allow your best bud's brother-in-law to start messing with it, that is when the problems start.
As a new rider, you really don't NEED that extra power. Many people I have ridden with have bikes with stock motors, exhausts, and components. They had no trouble keeping up with the worked bikes while riding in normal situations.