How would your build change depending on the choice? A build would require ALL of the parts listed unless you already had substitutes. In other words what would you use in place of the parts not chosen?
I would hold off until I find another sale for high-quality parts. My build has not been set in stone, but I would most likely try to find very similar parts in terms of quality and/or price.
Only parts I have actually planned to purchase are the i5-2500k, 8GB 1600 corsair ram, 500r Corsair case and an unlockable 6950.