The sort of Power supply you would need for this is around 800W up to 1MW (1000W). If you intend on getting another graphics card (to use SLI) you will need the 1000W option. Any case that will fit all this is your best option :P Find something that comfortably fits the Motherboard. For cooling you can either go for Water cooling, or traditional fans. If you go for fans, you will need at least 6 to keep it all cool. This will however make more noise than a water cooled system. Water cooling is more expensive, but can do a better job of cooling everything. Bluetooth can be easily added using an adapter (small USB stick that transmits out a bluetooth signal).
Also what Operating System do you intend to run this on? 8Gb of RAM is a lot of RAM!