looks pretty solid. you could save a bit by going wuth a 3470 instead, which would save about $60. you could also drop to 8 GB, which is plenty for most tasks today. I don't see a dvd, thats $15-19. use the savings for a 90-128gb ssd
the corsair 500W is plenty. what really matters for video cards is power on the 12v rail(s), and the CX 500 has 38 amps. a 660/660ti will run in that just fine (It needs 30-33 amps total) even a 680 runs in a 550W/ 45 amp PSU
how close do you live to the denver microcenter? they have some really good combo deals. check out page 33 on their catalog. you can get a combo deal with a 3570k for $170 and a z77 msi board for $40 or a gigabyte for $70. even with tax its still a good deal.