If that's the case, then just use the 60GB SSD for your boot drive (OS & what ever other apps) and a 500 GB disk for data.
That would save you close to $40.00:
http://www.pccasegear.com/index.php?main_page=product_info&cPath=210_344&products_id=18357
You graphics card of choice should be in direct response to what monitor(s)/resolution you're running (assuming this is for gaming). The 580 3GB version will be major over kill unless you're sporting a resolution that is a fair deal over 1920x1200. If you aren't then the 580 1.5 or 3GB versions will be over kill. In that case you'd be better off with a 570, 6950 or 6970.
We would need to know more info to be sure.
Hope that helps.