Ok looks good at first sight.
Now question is how you want to mount the folders on your OSMC device. My suggestion would be autofs.
Maybe just try your Movies shares first, you smb.shares could look like
/mnt/Movies -fstype=cifs,rw,vers=3.0,credentials=/home/osmc/.smbcredentials,iocharset=utf8,uid=osmc,gid=osmc ://192.168.1.106/Movies/