I have an opportunity to buy a 2009 YZ450F for $4000. It is the white version with black rims. It has been meticulously maintained (owned by a certified mechanic) and is clean as a whistle. It has a few minor mods but is mostly stock. The hour meter shows <15 hours. Is this as good a deal as I think it is? Also, I'm a fairly novice rider - maybe light intermediate. I've had a bike before but never done any hard riding (i.e. racing) and don't really intend to push it too hard on this one. It will mostly be for trail riding. My buddy is trying to tell me it's too much bike for me but I feel like there's no harm in having more power than you use. What do you think? Is this a good bike for me or should I stick with a 250? BTW, I'm 5'10, 210 lbs.