If you dont do anything that would take advantage of the Hyper Threading that the I7 has, most gaming does not use HT, then you'd be beter off with the i5-2500k and keep $100 in your pocket.
Make sure your ram is compatible with that motherboard.
The HAF932 AMD edition is a nice case but as far as I know they dont make the Front panel usb3 plate in the red color, only black of the normal 932. In case this is soomething important to you.
is i5 2500k future proof? because i dont want to spend more after one year.... my friend is i7 2600k has same proformance for gaming as compare to 2500k? dear i want to upgrade this rig for more then two years...
so whats your suggestion now?