looking for a play bike(trails mostly) i have a chance to buy a very very clean almost new 2001 yz426 for about $2900. Its be riden less than about 10 times. Is that a good price? I am an average aggressive 40yr old rider. If i ride more trails than MX tracks would i be better suited to look for a WR or put a flywheel weight on on a few other mods and be happy?