Overkill.
That is just totally ridiculous. I have 1 6970 and there's not a game I can't max. Some people are just arrogant, lol. When I go 6970x2 on black friday, I will be getting 60fps on any game on the market maxed out. Why would you want better than that?
What have you got to prove? How foolish you are for not waiting? It will be years before that kind of power is needed, especially with developers having a bad case of Consolitis. By the time it actually IS needed the 6950/70 will be MUCH cheaper. Wait, or you are a fool.
Also, you can only unlock to 6970 on the older 6950s. You can't do it on the new ones.