Okay, So i have been trying to find the "bang for your buck" parts and this is what i have come up with. I'm also trying to spend under $700 for the actual components. I went with the overkill PSU so i can keep it and use it in some of my future builds also.
Now for the Accessories. I already have an Acer 18.5" monitor at home and will be using it as the second screen while i save up for the third. And i REALLY like being able to have wireless and not have to run an Ethernet cable through my floor.
Defintely upgrade to the x4 955 Black edition, so you have the unlocked multiplier for OC'ing. Also, switch the mobo to the ASRock 870 Extreme 3, it supports Crossfire at x8 x8, which will give you a lot more longevity out of this build. Instead of the WD HDD, go with the Samsung F3 1TB for $55, basically the same performance and twice the storage. Case and PSU are good, I use the Antec 750w myself.
I got the Antec because of first, it has lot's of power 2nd because i want to be able to carry it over into a probably higher endd build when which i'll need the extra power. Plus right now i can get it in a great comba for $59.99