@george1421 Fantastic!!! I got Mint running and booting live over the network. Thank you so much for the info.
For everyone’s use I created:
/images/os/mint where I used 7z to extract the entirety of the mint.iso
/tftpboot/mint where I placed the vimlinuz and initrd.lz from the casper folder in the previously mentioned extracted iso.
My menu item in PXE is now this:
kernel tftp://${fog-ip}/mint/vmlinuz
initrd tftp://${fog-ip}/mint/initrd.lz
imgargs vmlinuz initrd=initrd.lz root=/dev/nfs boot=casper netboot=nfs nfsroot=${fog-ip}:/images/os/mint systemd.mask=tmp.mount ip=dhcp rw
boot
Boots great!! ClamAV scanning of Windows drives here I come!