At the very minimum you'll want a high quality 650w. You'll need to spend about $90 to get a PSU capable of supporting your needs without loving itself over. Seriously.
You don't need to get the hyper 212+. It will only make your computer harder to build and you will not benefit from it as the stock cooler is more than adequate. As Ethan said, that motherboard doesn't support sli.
Here: There is a $10 promo on the case and a $25 rebate on the psu. If you don't use rebates then tough stuff; you'll need more money. If you cheap out on the PSU then it will die and other components will likely die as well. Don't buy some stuffty offbrand one for $60.