ichessblumen,
Your case is interesting, I look forward to seeing how you progress.
I actually have a fully passive case already. Take a look here:
KustomPCs.co.uk - mCubed HFX Chassis Silver / Silver (Bare)
The same manufacturer also does a couple of smaller ones:
KustomPCs.co.uk - mCubed HFX® Mini Case White / Silver
and
KustomPCs.co.uk - HFX® Micro Bundle i965 - M1 Black Amber