So I wanted to run six rigs with six gpus each, 36 total. The problem was that I live in a one bedroom apt. So I had to get some serious ventilation to make it habitable. Before this setup was complete it was 86F with A/C on 24/7. Most people build the rigs with the mobo and gpus all in one frame. I took a different approach. Here it is from start to finish. Enjoy.
I'm very interested in the temps. Especially the ones at the end. I think you might want to upgrade your fan. Also, you might want to turn your GPUs around. I believe their design to move air the other way.