Firewall only - self protection ?

If the “Firewall only” option is installed (defense plus disabled), I understand there is no self protection.

But is there anyway to have defense plus enabled just to monitor Comodo itself (against shutdown, modification etc) ?

Would removing all entries in Protected files, Protected registry except those for Comodo work ?

I would disable all Monitor Settings except protected registry keys and protected files and folders first. Then remove the non Comodo registry keys and files and folders.

Out of curiosity. Why do you want to use firewall only?