It's plenty, your'e gravy.
That's fine for that system
Yep Looks good.
Someone told me when I asked the same question to add 100 to the wattage pcpartpicker gives you then round it up to nearest '50' or '00'.
So yours would be 450 watt, so the 500 you have picked is plenty.
Also look at the compatibility notes at the bottom of your build list. You may struggle with the size of the case. (even though it is a nice case!!)
any reason for that PSU as the EVGA600B, xfx550, CX500M are all currently cheaper and each have their own benefit over the cx500
no, actually I haven't noticed those. thanks for the heads up :)
Among the three listed above, one vote for the XFX since the oem is Seasonic.