1. 2500K is better than an 3570k for overclocking. Although why would you buy any of them without overclocking them? You can get easy 25% more performance on cpu by overclocking. Seen a lot of 3570k not passing the 4.5GHz while every 2500K is easily overclockable to 5GHz with decent cooling and even @ air. Remind that the 3570k has pci express 3.0 and the 2500k only 2.0 But the difference in performance between them is 0.000% in 1080p but in resolutions like 5760x1080 there is a big difference.
2. Rather pick an Asus p8z77-v - Asrock isnt reliable as Asus tbh. Although they share the same hardware but Asrock is crap at programming bios tbh.
3. I don't see why you would give 70 eur for a cooler while the Syncthe mine 2 costs only 20eur and is performing equally to a corsair H100 (watercooling) and surely better than that Thermaltake which inux94 linked.
http://nl.hardware.info/reviews/2359...ies-high-speed
4. Crucial M4 is a decent SSD but the Samsung 840 basic is better for the same price. Look at PCMark vantage and PCmark 7 benchmarks here because they base on realtime performance not on sequential or compressed data.
http://uk.hardware.info/reviews/3200...pcmark-vantage
5. If you're planning to overclock a 7970 forget that GHz edition, just buy a normal 7970. You're going to hate those boostclocks, trust me.. It's the only reason why I hate my gtx 680. If you don't plan to overclock your GPU, go for the GHz edition.