Kiwi,
I will mount the mobo "upside down" into the case. This allows the Noctua Fan to intake cool air directly thru drilled holes in the bottom. There will be a sealing between the fans edges and the bottom plate, so only the cool air, which comes thru the holes can be sucked in. This produces a slight overpressure in the case and the warm air flows out thru holes in the backplate and if necessary in the bottom plate.
The iPod is only a nice gadget, its internal music player will not being used. If necessary, the OS X desktop can be displayed via VNC. The remotes for iTunes (on OS X) are our iPhones and the iPad via the App "Apple Remote".
If something bigger fails or for system maintenance, I could use the TV via HDMI. An additional possibility is the VNC connection to my G5 or G4 Cube.
MacTester