Is this a good bandit build?

Good build. I used a similiar build, much like the normal one and yours, except messed up SB and mastery.

I went mastery (1 in SB)> SB > 6 booster > haste > booster > endure. the rest is whatever, Steal. I maxed DS in the first job, so maybe I should get some Nimble Body instead of Steal.