Just a small parts update (and to keep this worklog from drowning in page 5 or 6 or wherever it had sunk to)...
During the recent demise of Xoxide I scored a couple of great deals for this build. I'll be replacing the Scythe Musashi air coolers on my HD4870 cards with Swiftech MCW60 waterblocks.
This obviously frees up a LOT of room, and also allows me the space to use better ramsinks than the aluminum that came with the Musashi.
I also scored a 1000-watt modular PSU!
I've also made a minor design modification. I'm going to chop up the motherboard tray I have a little bit and mount the new PSU on the bottom of the case, sliding the motherboard up several inches. This will not only free up a lot of room on the bottom, but it will make power routing easier, I think.
This project isn't dead, it's just sleeping, as I have a lot of other stuff going on right now. Stay tuned, more news as it happens.