New pc build

Hi,

Im going down the intel quad processor path with nvidia graphics card. Here's my build im trying to keep it under 800£ any suggestions or changes would be appriciated. I double checked and think it's all compatible but im not 100% sure as im very rusty. havent build a pc in about 5 years.

Coolermaster case Elite 330
ASUS P7H55D-M PRO - Motherboard LGA1156 socket with Akasa AK-968 CPU cooler
Intel i7-860 Quad Core Processor - 2.80 GHz
Zotac Gf 9500gt 1gb
Corsair memory DDR3 1333MHz 2x2GB
Maxtor 250GB hard disk drive DiamondMax Plus 21 SATA 2

I run the spec through a calculator and it said 426 watts so im going for a 600 watt power supply to allow upgrades later.
OCZ StealthXStream 600 Watt