You had to stretch a little to get it? I had some fun when initially setting up the case here trying to route things around with a large cpu cooler and extra drives.
lol my biggest problem was storing the 4 pcie cords and routing 4 pin power connectors to fans and hdd and stuff. its an unorganized mess in my mid tower lol.
You set up a quad SLI in a mid tower? I hope you grabbed a 1000w quad SLI supply to cover it. I would think at least a large gaming case or full tower would leave the room to move around since that would get involved fast.
It can get quite expensive at times. With 4 cards you'll definitely want to see some extra cooling as well as having enough room and an adequate supply.