New Build - liq cooled 7990's

Hey guys, I'm a newbie here. I wanted to outline my new build to gather any thoughts. I've been reading on the forums for a while and you guys do some pretty amazing things. For my newest build I'm doing a 4 setup 7990 liquid cooled buildout. I know this has been done before but I figured I'd show you my setup. I purchased another 6 7990's ontop of the 4 going into this build and would love to do a rackmounted server setup but am unsure of the specific case and where to purchase. If anyone could be of any help greatly appreciated. Heres the setup so far:

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