The Build is quite.. iffy. There are some stats wasted, some items questioned. I see what you are trying to do, making use of that little time interval after you spam all of his skills where everything is on cooldown, you can throw in a punch or too (This happens a lot in Early Game Top engages). Even though I feel as though some stats are wasted, Lich Bane and Gunblade will make his autoattacks do something at the very least, but I personally don't like Morello's on Zac because the Torment is a much better burn DOT item and the mana regen is a wasted stat.

Not a bad build but it will sure take some more time to finish ;).

i dont think this build is that great is based on all much AP insted of being a tanky jungle with good dmg