Building a 65 GPU distributed Rig... Open to suggestions.

I am just beginning the process of creating a 65 AMD GPU Hashcat pen-testing rig that consists of 5 13GPU servers. Just wanted to see if anyone here has done something similar in the past and get recommendations as to the best possible way this might be accomplished. I am aware of the various options available for distributed network Hashcat configurations such as Hashtopolis, Cracklord, & Hashview but would like to see what others recommend based on experience before I start. Also, are there any new options out there that might be better than the ones mentioned?

Thanks for your replies in advance!