Why run both? You can set plex up to do it all, as it has user accounts with there own personal pins. that you decide per user, what they have access to or not, and make each user as family friendly as you deem necessary. You also get to authorize only the devices you want to allow access to plex as well.I'm running Emby for "family friendly" and Plex for porn.
That way kids don't see anything they're not supposed to. (Plex is password protected.)