I have the top 3 fans installed.
Here's a pic of them all running:
It looks much better in real life than in the photo. Probably because the photo is a bit grainy.
The noise of all eight fans is still extremely low, that I can't hear them over the hard drives.
BTW, my PC in its current case is sitting behind it. I attatched all the fans to a single molex connector, hidden behind the motherboard tray
Also, if you look at the motherboard tray, I have masked the areas where I want to cut holes, to put the wires through. But the penciled areas are only rough sketches so far.
Here is the side panel, with masking tape approximately where the window outline might be:
What are people's thoughts on that shape window?