Nice rig.
For the CPU cooler I'd go with the noctua nh-d14. Its by far the best air cooler on the market and it's better than these closed loop water coolers as well. Only true water cooling is better from my experience...
As far as PSU, that's an pretty easy to buy these days. GTX680s use less power than previous flagship cards so any decent brand name PSU from 850 to 1000W should do and future proof you for any crazy overclocking or upgrades you may decide to do in the future.
Just make sure it has all the connectors you need. No one likes molex to PCIe adapters. :)







