HDD: 2 x Western Digital Caviar Black 500GB SATA 6Gb/s 32MB Cache in RAID 0 - £84
Optical Drive: Already have one - £0
Case : Antec 300 Three Hundred Ultimate Gaming Case - £52
PSU: Antec TruePower New Modular 650W '80 Plus Bronze' £65
The thought behind this is that if the need arises i can slot an 8 core bulldozer in, add another 4GB RAM and crossfire another 6850 onto the system at some point in the future whilst still being able to perform now.
In the meantime I will be running as above whilst overclocking the CPU slightly to somewhere just over the 4GHz range.
Due to the resolution I will be playing at i think medium/ high settings could be attainable with this setup due to the resolution and minimal AA/AF, although it's just an educated guess as the game isn't out yet.
I think this is a well balanced PC for the price and appreciate any advice or changes that you think should be made to this build before i purchase.