Hydra is very good for him and guardian angel(Yomuu is only for mobility) too but i usually play AP shaco (He deal tons of damage). I don't know i don't play AD shaco but when i see any guy who play AD shaco he has Infinity edge and Hydra + Guardian angel. (Sorry for my english) And This is old build i acctualy buy guardian angel on all champions in the game.

Why not use Ravenous Hydra? I use it instead of BT and I think its perfect if you plan on split pushing or on soloing baron. Im not sure BT gives as much DPS and life drain as Hydra does.

Thoughts?

EDIT: Maybe also trade out Yomumu's for a Guardian Angel? Because Shaco is squishy, and yeah, you might hurt, but people usually focus him and having a defensive wouldn't hurt the insane damage he already has with your build.