For spec, it seems like for pure dps purposes you should drop the points in Quickening and Nightstalker and put them into something directly impacting damage. Between Sprint and Step you have plenty of mobility. Taking Precision, filling up Coup de Grace, taking Prep and Elusiveness to allow for Vanish + another opener from stealth mid-fight thus putting up Find Weakness for 10 more seconds, etc. would be good options. Elitist Jerks recommends
8.2.31 for example, although I don't know that the same theorycrafting/practical testing has been put into that as the other two specs.
For glyphs, you'll have Rupture up continuously, so the rolling bleed from the Hemo glyph doesn't really help, its damage being miniscule. Shadowdance or Eviscerate would be better. Not relevant to dps so take it or leave it, but I'd ditch the Kick glyph as well - if you get into raiding there are any number of fights where you will likely be part of an interrupt rotation and some mixup leaving you with a 14 second kick cooldown could be disastrous. Replace with the Tricks glyph so you can keep Tricks off cd at no energy cost.
I won't presume to comment on your rotation - from your post you already know what buffs/debuffs to keep up, and I'm in no position to say how you should do it.
Hope that helps. Will be interested to see what other posters may say.