I ride that bike now and it is a great cross country bike. The frame is light and it climbs very well. On serious downhills (double black diamond stuff - where you really shouldn't take this bike) it can bottom out and you have to be careful not to overheat the brakes. It tends to skid it's rear around steep switchbacks which can be fun once you get onto it. One of my riding companions just bought a Santa Cruz Blur TRc and it one of the few bikes I've encountered that may be a better hill climber - but it's carbon! I've also ridden this bike in SW Utah and it is ideal for the rolling desert single tracks.

You've got a good bike and the price seems pretty good. But the main thing is you've got the bike; the $$ is just water under the bridge.