i would say go with either the 6300 or the 8320, both are cheaper and you can get around the same performance out of the chips with a slight overclock. i have the same power supply but i would say get something smaller for what you will be using it for, i have my cpu and gpu overclocked 24/7 and im still not using half of what the psu can give but i have the gtx 770 and im looking to sli it sometime in the future, thats when the bigger power supply comes in handy, but if thats your build i would say for your build you could go with a 500watt and still have room to overclock, but do invest in a better cooler it will keep your computer quiter then the stock cooler, good luck with your build.
what do you plan on upgrading to in the future? it all depends on what you do. have a good night!