* Your CPU, are you rendering/video editing or is this just for gaming? If you are just gaming, dump the CPU and go for the 3570. You'll save nearly $100 for the same performance.
* The hard drive you picked is a pretty bad idea for throwing the operating system on. It's slow - it is a green drive. Those are meant for casual access/back ups not full time use as the main hard drive. If you are using it as a data drive and putting the OS and programs on a faster drive, then never mind. Otherwise, Western Digital's blue series is decent performance to price (otherwise you'll want to get the black series which is $99). This one Western Digital WD10EZEX Caviar Blue @ 7200 RPM is 1TB and is $69.
* You don't need a wired network adapter... the motherboard ethernet ports will do just fine.
* Antec PSUs are fairly good. If you want to save a little switch out your PSU for the Antec EA-650 Green.
All in all, if you follow my recommendations you'll save $158.
Edit: I'm going to touch your GPU pick. I'm going to touch the hell out of it and its going to like it. Dump the one you picked and go for this one:
http://au.pcpartpicker.com/part/evga-video-card-02gp43660kr . That'll save you another $30. Only difference is clock speed and you can overclock it yourself with EVGA's own overclocking tool.