What I'm trying to do with this build is to sneak

I think sneaking is...em...well 'no good' but I can't say that unless I try.
So I'm trying to make a good sneaker and test it.
So back to my stats, since I can't get 10 P so maybe I should take only 7P and add a point to A to get 7A and pick BRoF to have 2burst? I'd give up thief so sneak would be +/- 290 and sg 120-130. Would that work?