Welp, I think my #MARCHintosh antics with the StarMax have been more than successful. Time to put the SiniStarMax back to rest and pull out the Power Macintosh G4 "Sawtooth." I've got everything that was connected to the StarMax connected to the Sawtooth, with the ADB keyboard and PS/2 mouse replaced with USB ones.

The only unfortunate thing now, and I had forgotten about this until I connected it, is that it won't boot. I'm hoping it's because I pulled the PRAM battery to prevent it from leaking, but my main worry is that the PSU on it is dead. Curious is anyone involved in MARCHintosh knows if this should boot even without a PRAM battery. Replies on the topic welcome! 

@claudiom I have a Graphite G4 as well, and it had a dead PRAM battery when I got it. It would still start up, but I would receive an error message once at the desktop.
@GamesMissed Is it the same "Sawtooth" model that had the AGP slot?