i5 2500k right?
hard drive: spinpoint f3 1TB $62
short drive: what do you mean short? Do you mean solid state?
Power supply: Do you intend on buying another 6950 later or just using the one? If only using one downgrade to a 500-550W otherwise looks good.
case: Some nice ones are NZXT phantom, antec 300, haf 932. Just get one that you like with good air flow for a price you are willing to pay :P
cooling: I assume you mean cpu cooling? hyper 212+, corsair H70(water), zalman (most are great), noctua nh-d14 all good ones.