Xin Zhao Jungler

So I wanted to posit a possibility. I have fairly customized runes/masteries for my xin zhao jungling, and I have been thinking about this for awhile. Xin Q gives bonus AD, his W gives bonus AS and he scales really well with the AS and tankiness. I have moved from doing the Youmuus Ghostblade to the Black cleaver and I feel he falls off slightly more that way, but adds more to team fighting...... So here is my idea: Replace the AD marks/quints with Crit Chance marks and Movement Speed Quints(personal preference for jungle clears + ganking/counter jungling). My Q gives me enough AD to match people who do go AD marks/quints, and now I can have a 8.4% crit chance. So here is what will happen.....

Full build, I gain 10 Armour penetration, and after 5 hits I minus 25% Armor + my passive taking 15% armor on the guy im attacking. Between my W and BotrK, my AS is around 2.00 and I can time my initial hit + Q to make my hits actually faster by a split second, landing the 5 stacks from Black Cleaver in under 2 seconds. with 8.4% crit chance and no crit items built, I will land a crit strike on average every 5.9 seconds if I play sloppy and don't maximize my Q/AA combo., adding about an extra 35 damage per second. vs having 11 AD bonus from runes and quints. so I essentially gain a stronger clear time, stronger counter jungle early game and late game presence due to an added 13 AD per second late game.

So I would like to hear opinions on this change to my build, thanks! :D