If you have that much crit chance, I think you can leave sharpshooter out. Your gear is fine, however, I see that you have a LOT of discipline, and I can't see how you would get Disc starved to need Night Stalker. To tell you the truth, with all this discipline, I would probably remove one of the defensive skills (mine would be smoke screen because I jsut love Vault, but feel free to remove any of it), and go all out for Preparation with Punishment rune. With this, you can keep blowing everything out with your Loaded for Bear. Then I would change Night Stalker for either Grenadier or Steady Aim (for damage) or Awareness for survival. Its your call. I quit trying to get a too high toughness, changed all my gems to dexterity. We will never survive long those pesky poisons, sentries and lightnings. Awareness gives me just that 1sec that I need to get away from them and keep crushing them.
Edit: I still think that Sharpshooter is something you need to, at least, keep a look at. More crit chance is never a bad thing and losing that crit loaded for bear sucks.
You dont need archery with 1h xbow because Sharpshooter is a better option for it (since you are losing 1% crit only, but most of the time you will have more crit chance). But since you dont use sharpshooter either....there is something wrong here....
Edit: I still think that Sharpshooter is something you need to, at least, keep a look at. More crit chance is never a bad thing and losing that crit loaded for bear sucks.