First of all, socket 1366 is basically old technology with no upgrade path. What you really need is socket 1155. Since you do not plan on overclock, a Core i5-2400 processor will do fine. Also switch the motherboard to ASUS or Gigabyte z68. Which model you get depends on the features you want. Low or high end really does not matter as all are good. You also only need a 2x4gb(8gb) kit of DDR3 1333 ram.
That Coolermaster PSU is one of their better models, but they are lesser quality when compared to the likes of Antec, Corsair, Seasonic, Silverstone or XFX. I would opt for a 750 watt Bronze certified unit just to give you a little extra buffer. It will easily handle even twin 570 cards.
It will work, but also a bit older tech, and very overpriced for older tech. The newer z68 chip set basically combines all the functionality of the older P and H series chip sets. The newest boards are the new socket 2011, but are a bit bleeding edge still, and very pricey.