here's mine...
My Enlight and here's my friends
Imperium's case. WE did my friends several months after i did mine(explains hte much cleaner job...

).
I would personally go with dual 80mm intake, or single 92mm intake in the bottom front. It can fit a 120mm, but it is really, really tight.
The top fan is a 120mm on my friends, 92mm on mine. Depends on power supply and cdrom.
I enlarged my back fan near the cpu for a 92mm exhaust fan, and my side panel fan is a 120mm.
Imperium's case is done with holesaws + a jigsaw for the window. My case was solely jigsaw. HoleSaw's produce cleaner(and nicer) results, but they are somewhat costly if you're only gonna use htem once.
Mike