New build advice

Hi Overclockers!
First time posting. I've build systems in the past but this time I want to do it properly.
Unfortuantly I'm restrained by a bit of a budget but this is what I've come up with:

i5-2500K CPU
ASrock Extreme 4
G Skill 4GB Ripjaw-X 2133 RAM
Gigabyte GTX560Ti SOC
OCZ 60G SSD
Coolermaster Storm Scout Case

Possible extras:
Corsair H50 water cooler

I wont bother listing storage hard drives, monitors etc.

I'd like to hear your opinions and thoughts. I would like to get into a bit of overclocking too, and i believe those components are a pretty good start.
One thing I'm not too sure off is the power requirements for that system. I think the GFX card maxes out at 400W, so would a 600W PSU be enough?

Thanks for your help

You done your research! pretty good components there.

650 W is more than enough for your current build.

IMO, I would get a 750 W if I want to upgrade further down the road.

Also, what brand are you considering for your PSU. The best are Corsair and antec.

The TX750 W would be perfect. (from corsair)

I was thinking Corsair or Thermaltake.
My current rig has a 600W Zalman. Havent had any issues for over 4 years.
I like the modular PSUs, keeps the cabling tidy. Unfortunatly modular 750W tend to be a tad expensive. (I'm in Australia btw)

EDIT:
I think I'll choose the OCZ 750W Fatal1ty Modular PSU or the Zalman 750-HP. These seem to be fairly well priced.
Anyone have any comments about the OCZ PSUs?

check this link out for recommended psu's

http://www.overclockers.com/forums/showthread.php?t=589708