Thanks for the comments guys, first off, the 800D and TJ07 wouldn't work (maybe with some serious modding), I choose the HAF X simply because it was the best case of choice that has 9 expansion slots that holds the 4-way Classy board, I almost went with a MM but between price and sheer size (I wanted something not so huge) the HAF was really the only choice. As for the "teetering" rad bracket, its as solid as a rock and really the only way to go for a rear mounted quad rad.

The SLI connectors are Bitspower C-07 D-Plugs which again were IMO the best part for the job and look quite nice to boot. Temps for the cards are pretty good, all 4 are approx. 32-34c idle and hit around 62c with Furmark, real life temps while gaming etc. they never go over 53-54c, I'm looking at adding a triple rad on top in the next few days when I can get the time. They scored pretty nice on Vantage too http://www.evga.com/modsrigs/TopRating.aspx