Combat/Subtlety Rogue

So, this is my current build: http://www.wowhead.com/?talent=iZRdEd0Vz0boZGMh

The idea is to get to this:

http://www.wowhead.com/?talent=wZRdEd0VzLbhoxGrI0bh0o

I'll probably drop the 2 points in opportunity for something else once 1) Respeccing becomes cheap and 2) I stop using a dagger so damned often, but otherwise, it's pretty much where I want to be. Unless someone w/ more knowledge comes along and tells me that it's moronic of me to give up Surprise Attacks for Hemo or somesuch.