I played with some parts and finished a PCB design in Fritzing the last few days. I’m still waiting for some terminal connectors and relays I had to get on ebay. 10 copies of the board + shipping is going to run under $30. I opted for the cheap shipping so it’ll be a few weeks before they are manufactured and make it here from China. The Pro Mini I have running things at the moments is working fine, so I’m not in a rush and I tend to prefer keeping my money rather than getting something faster anyway.