You could do better than that. You only need 8GB RAM for gaming. The psu is also overkill. I recommend Seasonic S12II 620 instead http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096.
Save a couple bucks on those and you could probably get a Radeon HD7950 as well. For $1k, you could probably get an SSD as well