Monitor : Get like a 32" or 42" Plasma TV and just use it as a monitor. I love it personally.
Storage : 4x Western Digital Caviar Black 1TB 7200RPM 64MB cache RAID10 Array
Use your SSD as a boot drive
Any Cooler Master ATX Full Tower Case. Pick one that matches your style.
Oh, and invest in some turtle beaches. Those things kick ass and I love mine. I also have speakers, but with the turtle beaches when I am playing any FPS or 3PS I can easily here if they are behind me, to my right, to my left, etc.