your build looks ok, but i don't recommend madred and gunsoo and that hp item as they provide little extra damage, and def. My build is that wriggle comes first follow by shen than a crit item like before i finish trinity force i get cutlass and build gunblade, good slow. if you want real dmg get ie and a hat, but i usually go the tanky way and that is thormail and force of nature or Ga.

my only issue is that i wouldnt max leap first, i usually max empower first. empowe is the best move and maxing it first allows you to use it multiple time in one fight,