I know Ivy bridge is due out soon but I've already bought a CPU, so I'm not going to buy it. That applies to the RAM and GPU too.
I've chosen that PSU and case due to the bundle, since I like the CM Storm Scout, and silent pro m series is not a bad PSU either, as far as I'm aware. I know there are better out there, but for now I'll stick to that bundle. Alternatively I've chosen another PSU, which is:
Corsair 650W Enthusiast Series 80 plus bronze http://www.scan.co.uk/products/650w-psu-corsair-enthusi...
If it performs better, then I don't mind replacing the silent pro. Also, I'd appreciate if you could give some feedback about the sabertooth p67.
The Cooler Master Silent Pro M 700W is a good PSU.
However neither it, nor the Corsair TX650 V2, would support GTX 570 SLI. This is because they don't have enough PCIe connectors. You need a PSU with four PCIe connectors.