how did I just find this thread.
I am built a 2 node version : https://youtu.be/NopZUT2eFbA
And I am working on a 6 node version now.
Power is going to be the biggest enemy. I would love to find a way to power all the nodes with a single power supply. In fact the psu in the pictures are being returned. They can’t handle all the ports being used. I have new ones coming.
Heat is not currently an issue with the 2 node cluster. I am waiting to start assembling the 6 node to see.