Sweet build mate.
I agree with the guy above get a Samsung Spinpoint F3 1TB instead, very fast HDD.
Also be aware there are a few fairly common problems with the ASUS P8P67 boards such as double booting which you may want to consider. Other then that its a great board, great for overclocking. I have managed to sort out mine more or less after two months of having it, but still get the odd double post.
Is there a reason why you are getting micro ATX motherboard instead of ATX?
And finally why not go for a HX750 instead of a TX750 its only $15 more and is modular so will make cable manegment a lot easier and air flow better.http://www.amazon.com/Corsair-Professional-750-Watt-Certified-Compatible/dp/B0029F21LK/ref=sr_1_1?s=electronics&ie=UTF8&qid=1319730512&sr=1-1