Switch to an i5-3570k.
No difference in gaming.
Get the cheaper WD Blue but no problems with stick to black. You won't notice the difference in speed though.
SSD: The best right now is Samsung 840 Pro. M4 Crucial is still recommended as a good one.
Everything looks fine though.
Any good 500w PSU. Seasonic, XFX, Corsair.
Wow, thanks for the quick response. I will look into everything you suggested. a 500W will be enough?