http://au.pcpartpicker.com/part/corsair-power-supply-cp9020073 should be more than enough power, although I doubt the wisdom of building a sub-300W system like this. The cheapest power supplies that are modular or semi-modular are still a full 10% of your budget (At least on the Australian part picker), not to mention some other serious short-comings, such as the HDD. Pay a full dollar more, and get a
hard drive with twice the capacity and four times the cache, or if you're really stuck on Barracuda's, 3 dollars will get you the same thing from
them. Thirty-seven dollars now doubles your
SSD size, forty gets you a 960 with 4GB of video memory
There are a lot of spots here where if you were willing to spend a little more (Or even just downgrade windows, as you are very unlikely to need the hardware support features of pro with a build of this level, however you may want the language support/remote desktop support/ETC), you can get a lot more. Take a look, and re-evaluate your budget and component choices. You may want to spend more now to save later.