Really nice setup!
I don't know if you've come across this place or not but they make sick cases that you can get some ideas from.
Can't tell how your getting power into the power supply's but the PC power cable port would be nice to work into the side of your case and they also have a fan that could be used on both sides to push/pull air to keep temps under control. Sounds like temps are ok @ 100°… but its not really that warm in Calli right now and didn't get that hot this year.
Anyway, great work!
http://www.progressiverc.com/cases?cat=49

Edit: looks like you used the same type of PC power plug thing, just wasn't fitted in yet in the pic.