I'd drop the 3770K and go for a 3570K. unless you need 8 threads for major multi-tasking.
I'd get rid of that CM PSU and get an ~ 850 Watt Antec, Seasonic, or Corsair PSU. If you plan on doing an SLI rig in the future a 1000 watt might be warranted but not if you will just keep the single GTX580
CM often uses liar labels on their PSUs, meaning you don't get what you thought you were getting... Then they break and you get a heavy paperweight.