Spend more on the case, you are getting a good system and will need some better airflow. Look at cases like the Antec 900, Cooler Master 690, Cooler Master Haf 922/932.
PNY cards aren't that great, go for this GTX 275:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150387
I would...