Also have you used that graphics card before? If you have do you know what kind of temperatures it runs at under load? Everything i have heard about that card is that it runs fairly hot, so you should keep that in mind. Also have you considered a solid state hard drive? you can pick up a 60gb OCZ vertex (my preference) for $119 here:
This would be used to run your operating system and any main programs that you use. And the HDD you picked could be used as a storage device. Just a thought.
Can you please post the names of the parts so I don't have to go on a clickquest to answer, thanks.
I would suggest buying everything together when the SB is re-released, then if something doesn't work right you can RMA only thing I would purchase now would be the case (btw can't figure out which one you linked to)
Are you sure the psu doesn't come with a power cable, most do