You need some ranged units, or it may become unbalanced. Ideas: Dwarf Multi-Cannon, dwarf mining cart (vehicle, used for mining resources) dwarf soldiers.
Now -- woah, woah, woah... You haven't finished glestimals yet. Back to work Wciow! (BTW, I 'borrowed' your model for the bear to make the hellbear in my ancient tech tree, and yes, you will recieve credit)