Storing Player Values across Network?

I currently have an authoritative server setup with prefabs for Creator, Owner and Proxy. I've figured out how to use RPC's to shoot a projectile however the management of player variables has me scratching my head.

When it comes to things such as Player Health, Mana, Focus Target, etc. what are good ways to handle these? Should I create a "PlayerValues" type script that is assigned to all player prefabs, but use RPC's to set/get the values from the server?

Any information that can be shared would be fantastic, where I am quite confused as to how to proceed at this point.