Help with $800 Budget

Hey just wanting some help with getting a new PC,
I would like it to be quick, play the latest games and be decent for as long as possible without the need of selling my organs to buy it.

I live in Melbourne close to MSY and CLP but can order online.

Over View
What will it will be used for
Playing Games and watching Blu Ray

Budget
~$800

For 800 what do I want to get
Just the basics with the ability to just add on what I want in 6 months time

Preferred to buy from
www.cpl.net.au
www.msy.com.au
Open to other places or online shopping, I just live really close to the above stores. I don't mind getting parts shipped if it saves me money.

What I am thinking about so far
The Below is an example from CPL

Motherboard: MSI P67A-C45 B3 -$149
CPU: Intel i5-2500k -$229
RAM: Gskill 8G 1600C9 Sniper -$57
SSD: OCZ 2.5" 60 V3-E -$118 -http://www.tomshardware.com/reviews/ssd-review-benchmar...
Case: Antec 100 -$64 -http://store.antec.com/Product/enclosure-gear_for_gamer...
Fan: c/master Fan 120mm x3 -$18
PowerSupply: Antec High Current Gamer 900 -$155 -http://www.antec.com/Believe_it/product.php?id=MjQyNyYx...
or this Power Supply, seems to have enough power for basic use
PowerSupply: C/Master Extrem -$87 http://www.coolermaster.com.au/product.php?product_id=6...

So far Total = $790

Then I can add Graphics Card and a few other bits and parts.
Graphics Card: Asus 1G GTX 560 Ti -$259 -http://www.tomshardware.com/reviews/gaming-graphics-car...
or Sli it with 2
Wireless Card: NetGear WNDA3100 -$55 -http://www.netgear.com.au/home/products/wireless-adapte...
HDD: WD Black 1TB -$135 -http://www.wdc.com/en/products/products.aspx?id=100
Screen: 2x Asus 23" V233HLB -2x $144
KB: Logitech G510 Gaming K -$87 -http://www.logitech.com/en-au/keyboards/keyboard/device...
DVD: LG BH12LS38 12X Blu-Ray Writer Oem -$89

So yeah, if anyone has an opinion or a better ~$800 build please help me out =)