First thing I would suggest is a hard drive, unless you're planning on running the computer without one.
That power supply is not EVGA's best work:
http://www.tomshardware.com/answers/id-1804779/power-supply-unit-tier-list.html
Maybe you won't get one in the very top of the list if you're being budget conscious, but at least try to get from the top of tier 2, like some of these:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182068
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207015
bottom one would be if you're considering crossfire later, probably one of the best price/quality deals available right this minute.
Beyond that, a more powerful video card is probably where your money would be best spent, though the one you have isn't terrible; crossfire later could be an option if money is tight now.