Yes, it is worth checking out. The issue with the Hardrock is the fork. Since it
has suspension, you may have problems with it bottoming out (at our weight)
if it cannot be locked out. That is why I prefer rigid bikes but if it can be
locked out, you should look at it as a possibility.

If it fits, it could be a good starter bike with a little TLC. Plenty of gears if
you live in a hilly area.