Help me making an Infernal Blow build

Im lvl 65 and mi dps is near 12k if i activate all my damage abs and charges, so... i dont know, often its very low for killing bosses, and my defense is bullshit.

My character is not private so check it out, and give me tips, im trying to changing axe for mace, some points are in axe damage (trying to get orbs to refund that points).

Also need advice in what as.class can i choose... so, thanks!