i5 2500k & P8P67 WS Revolution- http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...440$ after mail in rebate room for expansion for the gpu's it sounds like you are doing something extreme... you wont see any performance boost from the 2600k gaming. games cannot take advantage of hyperthreading
I was thinking of adding more GPUs as upgrades for future proofing.
Does the MB that you listed allow graphics to be used from the CPU? I may want to get most of the system up and add the GPUs a bit later.
I had not considered multiple monitors, but that would fit in line with the multiple GPU design and I am seriously considering it now. The link to the first monitor suggestion doesn't work: could you re-post it?
The Corsair h60 liquid CPU cooler looks very nice. Installation looks like it would be pretty straight forward. Do you have experience installing these and how easy/hard is it?
All in all some very interesting suggestions. I believe that the i5 CPU will probably be sufficient as you mentioned. I was on the fence about this until your suggestion.