Hey Paul, I have three Pi's here, a 3b, a 3b+ and a Pi 4. Right now the Pi 4 is my local NAS for my LAN, and the two Pi 3b's are just sitting around, just to tinker with, now and then.
FWIW: I had Slackware Current and Slackware Stable running on these things. You should get a kick on setting...