Everything seems to be expensive in Australia.
That would be a good PSU, even if it's not quite the best price. And unless you're powering some crazy overclocked AMD FX9590 which is drawing 400 watts on it's own, then yes, it will also power the new GTX 1080. If I read correctly - the power draw from the GTX 1080 is actually quite a bit lower than the GTX 980 due to the 16nm process - it requires (in reference form) one SINGLE 8 pin PEG connector - and draws on average about 175 watts total.
That means - on average - and assuming you're targeting a 60% load on your PSU, a Skylake i5/i7, SSD/HDD/GTX1080 setup should only pull (worst case) about 350w or so and thus only require around a 550w PSU.
Insane.
In a good way