Sorry to kill the buzz but one thing is certain, rageblade doesn't proc E twice per aa :)

This aside, reminds me of the good old days i build Cho the Zephyr Iceborn Gauntlet ^^

So funny to play this build ! Nobody knows how to play to play against so u should do a ton of kills. And if u do a ton of kills, u should do another ton of kills cause cho' is a great snowball champ.
The only prob is u're squishy early-mid game, so its hard to AA. Buy a tank item before Guinsoo will help u to do sustained dmg.
Another tip : go with AS marks, for an incredible clear and sustain (start with machete) but u need to start blue if ya want to do this

JUST EAT THEM ALL