Javcek
AFAIK it depends on the other apps you use. If you have several apps maintaining a connection independently for notifications that could eat a lot of battery life vs using play services (only 1 connection needed for all notifications).
If you don’t have apps maintaining these connections for notifications, then a profile without google services should have better battery life than one with play services.
In terms of your second question, my understanding is creating several profiles does not affect battery life but having several ‘on’ at the same time does.