I'm also in the camp that thinks you would be much better served by an early 90's or so non suspension mountain bike.
Look for a CR-MO (Chrome Moly) steel frame. Butted (or double butted) is lighter without giving up strength.
Older Specialized Rockhopers, Stump Jumpers, Hardrocks and that ilk.
many times, the older bikes have a better level of components then their newer namesakes.