If I remember correctly, my first rough draft used Large battleaxes. I still like those. Although now I like Gargantuan throwing axes even better, since they allow for ranged attacks as well.
That would work out something like:
Attack: Throwing axe +22 melee (3d6+14) or bite +22 melee (1d6+14 plus 1d6 electricity) or claw +22 melee (1d4+14 plus 1d6 electricity) or slam +22 melee (1d4+14 plus 1d6 electricity) or throwing axe +9 ranged (3d6+14)
Full Attack: Throwing axe +22/+17/+12 melee (3d6+14) and 7 throwing axes +22 melee (3d6+14) and 8 bites +22 melee (1d6+14 plus 1d6 electricity) and 8 claws +22 melee (1d4+14 plus 1d6 electricity);
or 8 bites +22 melee (1d6+14 plus 1d6 electricity) and 8 claws +22 melee (1d4+14 plus 1d6 electricity) and 8 slams +22 melee (1d4+14 plus 1d6 electricity); or 8 throwing axes +9 ranged (3d6+14)
Chop! Chop! Chop! Chop! Chop! Chop! Chop! Chop!
Hmm, although if substitute Gargantuan tridents for the light axes then the melee and ranged damages become 4d6+14, which is even better.
Spike! Spike! Spike! Spike! Spike! Spike! Spike! Spike!