If you can afford a better PSU get one of these instead: you should be able to with the decrease in price of your GPU. I picked these cause they are under $100, but you could easily spend more.
http://www.newegg.com/Product/Product.asp?Item=N82E16817153007
http://www.newegg.com/Product/Product.asp?Item=N82E16817103928
http://www.newegg.com/Product/Product.asp?Item=N82E16817104154
I run a similar system with an Antec 380w, but your should get more, esp with future upgrades...
everything else looks good.
http://www.newegg.com/Product/Product.asp?Item=N82E16817153007
http://www.newegg.com/Product/Product.asp?Item=N82E16817103928
http://www.newegg.com/Product/Product.asp?Item=N82E16817104154
I run a similar system with an Antec 380w, but your should get more, esp with future upgrades...
everything else looks good.