I wish you every success. These are a sensational addition to any darkroom. I probably made more enlargements over my life time on 138 & 138 S enlargers than any other device — they were ubiquitous in commercial operations for decades. Most would have been scrapped 10 years or more ago as the evil of 0s & 1s spread its menacing tentacles.
Others well worth investigation might be DeVerre and Kamm
Keen to hear how you get on.
"We see things not as they are. We see them as we are."
— Emanuel Kant