All sounds like good advice.

But there are about six binaries which used to be in /sbin but are now
in /usr/sbin (quota stuff and NFS daemons:) Don't forget to delete the
/sbin versions of these binaries. If you don't, and you start NFS, the
old binaries can cause your system to wedge.  (nfsd and nfsiod are the
main suspects here.)