I ran SSHFS for a while maybe half a year ago? I quite liked it cause we obviously already use SSH so setup was quick and easy, performance was good too. Then I learnt it’s no longer maintained so switched to NFS.
NFS is good, if you aren’t accessing from Windows I would go for that. Setup is pretty simple too, just change /etc/exports and a few permissions or ownerships (after installing the package obviously) then start the systemd service.
Can’t comment on Kerberos, but considering NFS popularity I can’t imagine it being difficult.