How is this pc build?

I wanted feedback on this build. Have I overlooked something?
First of all, I plan on recycling my cd/dvd drive and burner, my case, my power supply. Let me know what you think.
Mobo: ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157271
CPU: Intel Core i5-2500K Sandy Bridge 3.3GHz
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115072
Video Card: MSI N560GTX-TI Twin Frozr II/OC GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127565
RAM: G.SKILL Ripjaws Series 4GB 240-Pin DDR3 SDRAM DDR3 1333
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231310
HDD: Still looking for one >500Gb for <$100. Suggestions?
PSU: Roswell 550W (recycle from my current pc)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182017
Case: Antec Solo (recycle from my current pc)
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129018
Answer #1
I recommend this mobo/cpu/ram combo:
ASRock Extreme3 Gen3/i5-2500K/8GB (2×4) G.SKILL Ripjaws 1600MHz
http://secure.newegg.com/WishList/PublicWishDetail.aspx?WishListNumber=16928672
And this video card:
EVGA nVidia Geforce GTX 560 Ti 2GB
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130683
HDD’s are expensive online, check your local shops, the price increase might not have reached them. You can grab an F3 off Frys for cheaper than some places.
http://shop2.frys.com/product/6473452?site=sr:SEARCH:MAIN_RSLT_PG
And if you want a PSU upgrade, get the TX750 V2, that way you can do SLI if you later decide (560 Ti’s work good in SLI).
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021
Answer #2
I’d recommend a trustworthy brand for PSU (like antec, corsair, seasonic, xfx)
videocard, get a sapphire hd6950 dirt 3 edition
HDD, get a samsung spinpoint f3
Answer #3
looks good, but you are going to have a hard time getting hold of a hard drive at the moment