Striker Suggested Build (2nd/3rd)

I'm following matt's build but with variation.
What I'M doing is leaving buster at 19 and moving booster up to 12 so that lightning charge syncs with booster, and it makes easier macroing and that 6% more damage for buster is insignificant.

Steve, lightning charge is 140 seconds. Level 12 booster does not sync. Take that point out of mastery, perhaps? That is just one accuracy.