Help with my pc build

[Tanner The Monotone]

I'm trying to build a gaming pc and I wanted some advice.

Here is what I've selected so far:

Motherboard:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3858040&Sku=A455-9701

Disc Drive:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4814646&Sku=S203-8592%20OEM

Processor:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4904560&Sku=A79-8320

Hard drive:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3303660&Sku=T24-9901

ram:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3683258&Sku=K24-2220

Now, I still need the power supply, graphics card and case. I will have 400 dollars left to spend after I buy those parts.

Can you help me choose the rest of the parts with the money I have left?

If you have any suggestions on any alternative parts, I'm also open to suggestions.