Well, its okey, but not that good.
1. 2/3 - Aggression. as a dagger rogue u use ur backstab for dmg and generate Combo Points, and the combo points is only used for Slice and Dice to get faster white dmg and thats it. but when u pop your adrenaline rush u will generate more combo point than u can spend on slice and dice (its just tarded to overlap the slice and dice with a new 1 if its not on 0-1 sec left of the other) and thats when u use ur evi/rupture. So imo, u only use evi/rupture every 5 min or so.
2. 5/5 - lethality. i have romoved 1 point from that and put that point in Relentless strikes, and that is bec Slice and dice cost 25 energy, and sometimes (quite often, bec u dont want to w8 to get 5/5 Combo points every time to use ur slice and dice bec that will make u do lesser dps) when u use Slice and dice u recover 25 energy = no energy spent = using backstabs more often = more dmg.
and i do belive that 25 energy regain time to times is more effective than 6% more criticalstrike dmg from 1 Backstab.
3. Here is my Built, the only difference is to things above, and that i puted the points from ur Aggression in Improved Sprint. and the 2 points from Endurence to Improved kick. please give me some feedback!!
http://www.wowprovider.com/Old.aspx?talent=11226005_