The Right Pc Build?

Hey Guys, Just need some quick tips. Im building a Pc, and I've been looking at Game egg on ebay and they have pretty sweet deals. I already have a GPU (GTX 660), and 16Gb dual-channel ddr3 memory which I will also use, also I have a HDD 2tb card which will be used for this build. Just needed some feedback and help.

Il'l post some links to the parts I just need, all are under $650ish: australian dollars

CPU: http://www.ebay.com.au/itm/Intel-Quad-Core-i5-4670-4th-Gen-CPU-3-4Ghz-3-8Ghz-6MB-LGA1150-64bit-Desktop-PC-/190910277948?pt=AU_Components&hash=item2c7323a93c

MOBOhttp://www.ebay.com.au/itm/ASUS-Z87-C-ATX-Intel-Motherboard-Intel-Z87-USB-3-0-LGA-1150-HDMI-SATA-6Gb-s-/200946115786?pt=AU_Components&hash=item2ec95264ca

PSUhttp://www.ebay.com.au/itm/CoolerMaster-GXII-750W-85-Typically-Gaming-Power-Supply-80Plus-Bronze-5-Yr-WTY-/200963225579?pt=AU_Components&hash=item2eca5777eb

Sound Card, do I need that??? http://www.ebay.com.au/itm/Creative-Sound-Blaster-Audigy-Value-Sound-Card-PCI-7-1-24Bit-Audio-EAX-Retail-/200944618321?pt=AU_Components&hash=item2ec93b8b51

Wireless adapter, I definetly need this :http://www.ebay.com.au/itm/ASUS-PCE-N53-Wireless-N600-Dual-Band-600Mbps-PCI-E-WIFI-PCI-Express-Adapter-PCIe-/190913827248?pt=AU_Components&hash=item2c7359d1b0

I already have this case on the way:http://www.ebay.com.au/itm/221080731006?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Anything I could improve for the same amount of price kinda?

Feedback and help always appreciated, thanks. 

ps...I probs wlll try and overclock the gpu for a bit of extra performance

 

CPU: get the unlocked version of that processor. you may say you won't overclock, but still, you just migh in the future.

PSU: get one from corsair, not that one. 

You don't really need a sound card, but its all choice. its kind of like integrated graphics vs dedicated graphics, its just better. 

CASE: never seen that thing in my life but it looks cool. 

I'd agree on the unlocked processor.  When I had my first rig, I didn't expect to be overclocking as I'd been using laptops since I was born.  I found it a nice convenience when I could overclock my C2D e8600 to speeds that could hold up to the games of 2012, and sold it for a decent amount of cash.