Go with a sandy-bridge CPU. 2500k. I read (on this forum, I believe) the price difference between the 2500k and the 2600k is not worth the money. Probably the 6850 GPU, 4GB RAM, 1TB HDD. That PSU is garbage, get yourself a 600W+ OCz or Thermaltake. Silverstone and Antec are great PSUs too. The case you want is up to you.