Gaming build

Hello! I want to buy a new gaming computer completely from scratch!
I have a rough idea of my computer but I have room for maybe 70 $ for improvment, if it is really necessary!

Cooler Master Elite 430 Tower No PSU Black ATX
http://www.newegg.com/Product/Prod [...] 6811119227

Corsair 8GB (KIT) DDR3 1600MHz 9-9-9-24/VENGEANCE
http://www.newegg.com/Product/Prod [...] 6820233147

Corsair Power Supply 600W GS 80 Plus
http://www.newegg.com/Product/Prod [...] 6817139036

Gigabyte GA-H77-DS3H Intel H77 4xDDR3 CrossFireX Socket 1155 ATX
http://www.newegg.com/Product/Prod [...] 6813128550

Gigabyte GeForce GTX 660Ti OC 2GB DDR5 2xDVI HDMI DisplayPort PCIe
http://www.newegg.com/Product/Prod [...] 6814125440

Intel Core i5-3550 3.3GHz Socket 1155 Box
http://www.newegg.com/Product/Prod [...] 6819116505

Western Digital Caviar Blue 5000AAKX 500GB 7200rpm 16MB SATA-3
http://www.newegg.com/Product/Prod [...] 6822136769

I am not going to overclock, but I do want to play the latest games etc. I am just looking for a computer, not screen, mouse or anything.
Thank you!