Hey There,
In my opinion I think you should look at fleshing your build out some more and perhaps reducing the power supply. 1250 Watts is a monsterous amount of power and more than likely way more than you need. If your from Australia then
www.pccasegear.com has a great list of parts which may give you an idea what your looking for which in turn will then help us advise you :).
Here is my build to help you and give you some ideas:
Case: Aerocool Predator
Motherboard: ASUS ROG Crosshair V Formula
RAM: Corsair Dominator GT 2133 MHZ 16gb
CPU: AMD FX 8150
HDDS: 2x WD Caviar Black 2tb 1x WD Caviar Green 1 TB 1x Samsung 1TB
Graphics Card: Nvidia GTX 680
Power Supply: Modular M850 (Coolermaster I think)
Optical Drive: DVD RW Drive
Sound Card: Creative XFI Titanium Fatal1ty Champion.
Hope this helps you
🙂