So if this is the RAM you are getting, for about $108 http://www.newegg.com/Product/Product.aspx...1-318-_-Product
, then I would suggest going ahead and getting the same brand of RAM timed at 1600mhz instead of 1333mhz.http://www.newegg.com/Product/Product.aspx...1-321-_-Product
I understand that that cpu doesn't support it, but your motherboard does and it would help if you decide upgrading cpu's later. You can also overclock easier when raising the base clock, which I guess isn't all that important since your cpu has unlocked multipliers. But yeah the slightly higher rated RAM is the same price- actually it has free shipping on Newegg so it's cheaper.
Good choice of motherboard and cpu. Your motherboard supports AOD ACC which will allow you to unlock disabled cores, which you are likely to get since your are buying the x2 processor which will unlock to a x3 or even a x4 if you are lucky.
Your motherboard and case are both ATX and are compatible.
You're spending a lot on the case itself, which is $130. I understand if you just like its style but you can get much better cases for that money that have better cooling features and such. I myself have an Antec 1200 which is around $160, which is much bigger with more room(full atx), has great cable management features, can house 9 hard drives, has six fans with room for two more, and looks cooler in my opinion. The Antec 1200 or other similar cases have much better cooling features which is what you want if you want to overclock. When I asked people for advice on here they recommended full ATX cases. But hey, it's mostly personal preference.
For graphics cards I don't know much about. But if this computer is pretty much just for gaming, you want to get the best possible graphics card you can buy. But yeah I have no idea.
For PSU's make sure that it has all the connectors you want and enough power for what you need now and what you will need for your future planned upgrades. Also look out for deals. you could get this type of PSU for 35 dollars if you catch a good deal.
yup looks good. Good luck