Don't get a coolermaster PSU. Get one from Antec, XFX, Corsair, Seasonic.
You need a z77 motherboard if you want to overclock the CPU.
The GPU is only going to play games at medium settings at 1080p.
If this is for gaming, you can do alot better.
Yeah, obviously a lot depends on what the OP wants to do with the rig, but if it's for gaming, the CPU and the GPU are heavily unbalanced; I wouldn't pair a Core i5 with anything less than a 7850 on the graphics' subsystem unless I just didn't care about graphics' performance.
I also wouldn't bother buying a "K" (unlocked) CPU if I weren't also buying an overclocking motherboard (z77). Although it's true that you could replace the motherboard later, the motherboard is generally the most annoying part to upgrade (requiring an OS reinstall, in most cases, and if you have an OEM copy of windows, a new motherboard requires a whole new license from Microsoft).
If the OP could supply a budget, and declare his usage preferences, we'd be able to help better.