Personally speaking, I strongly suggest you make EX Fang blockable as opposed to unblockable.
I mean the other EX moves should be fine, but EX Fang seems like it should be blockable instead.
Also, Knuckle (seeing as how it seems like a mid attack) should be blockable (as in close up, not as in part of the Smash, Knuckle, Fang chain) as opposed to being unblockable on a crouch guarding opponent.
EX Napalm is unblockable when close to a crouch guarding opponent.