According to PcPartPicker, the system will need atleast 443W. Though I may overclock the cpu and gpu(though possibly won't OC) a bit. The most I would concider overclocking the cpu is 3.9 - 4.0ghz.
I read somewhere with the gpu I need to make sure the 12v rail contains one rail to provide 40A I believe. What PSU would be recommended for me? I looked at a guide on this site about PSU, and understand a little bit of it, but wanted an answer provided by more experienced people. This will be a gaming rig.