Really nice build so far and I love the matx form factor.
But I am super worried about temps with 4 GPUs and a CPU on 360mm of rad space, I have a single GPU and CPU on 600mm of radiator and it still is quite warm at times.
But I am super worried about temps with 4 GPUs and a CPU on 360mm of rad space, I have a single GPU and CPU on 600mm of radiator and it still is quite warm at times.

), as getting flexible hose to play nice and look good in such a small space may be difficult. I've seen one Youtube video review where the guy had 2 x 240s at the front of the case and the pump & res in the back compartment next to the PSU, this will likely be the way I'll be going.