I've decided to dust off my odroid hc2 that got shelved when I built my mitx nas.
My odroid hc2 is now running armbian buster with 5.4.83 kernel and omv 5.5.22-1 (I believe).
The hc2 has now been designated as the sole nfs/tftp server and pihole (omv docker).
This frees up my mitx hardware to concentrate on proxmox or whatever else project I might throw at it. Fortunately I was able to use rsync and pull my nfs directory from my working mitx build to my hc2 build and my raspberry pis didn't notice the difference.