New Build Help (First Build)

First time builder here and I would like some feedback.

http://pcpartpicker.com/au/p/pR6R (The video card in the pcpartpicker list is incorrect)

PowerColor Radeon HD 7850 1GB Video Card

AMD FX-8150 Black Edition 8-Core Processor

TP-Link 150Mbps Wireless Lite N PCI Express (TL-WN781N)

Gigabyte GA-990FXA-UD3 Motherboard

G.Skill 8GB 2x4GB PC3-10666 DDR3 (F3-10666CL9D-8GBRL)

Seagate Barracuda ST1000DM003 3.5" 1TB SATA 6.0Gb/s Hard Drive

OCZ Fatal1ty 750W Modular Power Supply

Is there anything I can go cheaper/ better on? I am specifically looking at the Power Supply on this one. 

I also need a case. Looking at $50 - $80.

You really don't want a bulldozer CPU there are much better options either get the pile driver at that price point or honestly you best bet would be a 2500k.

PSU is major overkill you need maybe 600w and Fatal1ty branding tends to be an artificial price bump.

Also I would really try to find 1600Mhz memory.

Also if you do some digging you can find a mobo with built in wifi so you don't have to waste a PCIe slot and inhibit airflow.

Would you consider there to be a big difference between the 2500k and the 2500 or the 2500k and the 2400?

2500k and 2500 the only difference is overclockability if you aren't going to overclock or don't want much then the 2500 will be cheaper 2400 is a lower clock speed.