Would have been better if you told us that you're from Aus, you know
I think this setup would do:
AMD FX-6300 6 Core Black Edition Processor
ASRock 970 Extreme4 Motherboard
Kingston HyperX KHX1600C9D3B1K2/8GX 8GB (2x4GB) DDR3
Gigabyte Radeon HD7950 3GB Overclocked
Silverstone Strider 500W ST50F-ES
Sub-Total: $693.00 ( Pccasegear )
If you want to lower the price then just get 4gb ram instead. RAM is the easiest thing to upgrade later anyway.