Ninja Build / Help?

What's your ninja build focus around and why?
It seems SE is pushing us more towards SS these days instead of Det/Crit. Just wondering g your thoughts on it and what does your build / DPS on your nin look like?

I'm having a lot of difficulty exceeding 600-700 DPS on Rav Ex, and I'm 183.... I know those numbers are pathetic, and its getting on my FCs nerves. My question is, my rotation seems kinda fine to me, but I wanna maximize my DPS. What would you guys recommend, and what are your numbers on this fight?