What, how have I missed this thread? So nice, I am jealous of everything. Even your shop!
Any details on your outrunner spindle? How are you converting it to, I’m guessing er11, from the regular shaft? I would love to try that out but could never find an elegant coupler system. The motor and the ESC should be easy enough, I have used them in a few projects but the shaft conversion? This is what I wanted to do from day one and kind of gave up on it because the dewalt was so cheap and easy. The downside is it is heavy, awkward to mount, and loud.