By the way, you should check the rider sizing chart on Dan's Comp.
http://www.danscomp.com/serve.php?se...riderchart.htm
According to the charts you are in the middle of the Expert range, you should not have to grow into this bike.
Keep in mind that these charts are just guidelines, you really should try a few bikes if you can so that you are sure you are making the right choice. You will notice that the Expert frame size in the sizing chart indicates an 18.5"-19.5" top tube and the bike you linked indicates a 20", the Intense Expert appears to be a large Expert frame.