It'll be fine. The corsair is well over what is required, and there are arguements that high wattage modular supplies are asking for trouble. Everywhere you introduce another contact you get resistance, heating, oxidation and so forth.
I recommend dropping to a 600W Corsair, of if you must overspend on the psu get a Seasonic, PC power and cooling, or BeQuiet.
The classified is mental, but I presume you know this.
edit: not certain the graphics card is that good a call at the price either, but other people are better informed than me on that one