LongbonesRig :
So you reckons 7970 3ghz edition on 3 screen?? How does my set up look?? I'm looking at the asus P8Z77-V LK instead of the maximus v gene to save 50 quid, what do you think?
Is anything overkill that I could lower to save money but still get the same results
It doesn't matter if you get the 1GHz edition if you can overclock the 7970 yourself. Just make the 7970 comes with a good cooler. The cheaper motherboard is fine, you can overclock easily, and I would actually prefer it because it is bigger giving more space for video cards and it has a PS2 port for mechanical keyboards, if you ever get one. The H80i is a bit of a luxury, a good air cooler like the hyper 212+ will allow a decent overclock to 4.4 GHz. My 7970 draws about 360W at full load measured at the wall with a power meter, so 750W is a bit much unless you plan on getting more video cards in the future. You could go with 600W and be fine, or a really reliable 500W. Power supplies are most efficient around the 75% load range.
EDIT: Also, you will need an active adapter for one of the monitors because only two can be driven by the clock on the 7970. The active adapter has its own clock.