I have a restart function that is ran by my server host but for some reason due to a different rcon system it's not able to give a restart notification.

Can I use this plugin only for the notification and let my game server host do the actual restart? If so how?

Unless your control panel does an actual RCON command, not a process kill, I would stick to using this plugin to handle the restarts.

I imagine "enableAutoReboot" in the config is what you want though.