It's more tedious to navigate through the sites you prefer I'll see if I can put in extra work alter. I wouldn't be try to revolve your build around ivy bridge. Sandy Bridge is really good and it will last you the years.
The only suggestions I can make for your motherboard selection is that: Asus, ASRock, MSI, and Giga-byte are all good brands. If you plan to SLI in the future, then 750W would be enough for 560 ti/570/6950. If possible I'll bump to 800ish watt if the price isn't that far off. It gives you more freedom. This also means you have to make sure your motherboard has 2 PCIe 2.0 x16 slots or more. You will probably be running it at x8,x8 which isn't bad. For GPU I would either go for the 560 ti or 6950. You can flash the 6950 to a 6970 instead of wasting all that money.