Feel free to customize it as much as you like. You may not need 256gb of SSD storage or a HD 7970. If not, drop the SSD down to a 128gb Samsung 830. Then get the HD 7950 for your GPU.
If you plan on doing SLI/Crossfire, I'd recommend going with the XFX PSU in the build above. It's a high quality PSU that can be trusted. Not to mention, it's also modular. This makes cable management a breeze.
If you have any questions, don't hesitate to ask. I hope this helps; good luck!
I hate buying parts here, everything costs like 5-10% more.
You should use a high end air cooler, or a full on water loop. Don't go for the closed loops, especially when there so overpriced in aus.