I think his build is pretty good actually. However, Ensis, you need to change your CPU to an i5-4690k otherwise you won't be able to overclock. With the new Skylake i5-6500 (Or any 6000 series) you CAN do a BLCK overclock. Maybe Skylake chipset will be better for you. This means i5-6500 + Z170 motherboard + DDR4 RAM.
The SSD you've chosen is slow, so changing it for a faster one would be suggested.
The most important point is that you have to change your power supply to a high quality one. The Coolmax power supply you've chosen is dead low quality and might die on you sooner than you think. Here a list of power supplies you have to select from if you want a lasting build, tier 1 or 2 is good:
http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html
Also, if you want a good headset, the Logitech G430 is not. Atleast not compared to the HyperX Cloud Pro that is sold for even less I think. Look up some reviews you won't hestitate for long.
Basically, the following changes:
http://pcpartpicker.com/p/C84DGX