I'll just leave an input here, can you wait for this upgrade? If yes, you'll be saving a lot on the components you've mentioned in about 2-3 months. Since it's a drought this year, i.e no great games except ACIII and FC3. Good games release in Feb and late 2013, like BioShock Infinite, Crysis 3, Metro: LL and such.
I suggest you wait and watch the prices, especially the CPUs and GPUs. Buy them RAM sticks and PSU but wait for the processor and graphics processor. I heard AMD are coming out with 8xxx series which will match up with your yet-to-buy GTX670 for just 15K. Or GTX670 might get reduced to that much. It's a win-win situation. After all, patience is the key.
But it boils down to your decision. I'll choose 'wait'.