You panel layout is a bit unconventional but reasonable. The only thing I really see wrong, and needs to be corrected, is the mounting of the drives. They should be vertical for proper air flow around them. The way you have them in there, the bottom one warms the next up and so on, not a good situation. You might take a look here for some general ideas. https://www.cnczone.com/forums/mecha...77816-cnc.html