Paying way too much for a power supply. For what you have, this is enough:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008&Tpk=400cx
You can also just switch that case + PSU for the one I listed (500W Antec EarthWatts included).
Use the extra money for a better video card:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102873&cm_re=5770-_-14-102-873-_-Product
or processor.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008&Tpk=400cx
You can also just switch that case + PSU for the one I listed (500W Antec EarthWatts included).
Use the extra money for a better video card:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102873&cm_re=5770-_-14-102-873-_-Product
or processor.