Ready to play when level loaded?

Hi.

So I managed to create and join a room (1vs1 game)
When the room is full, both players start to load scene "level1".

What is the best way to exchange the status that a level was successfully loaded?
I know there are multiple ways like raiseEvents or synchronize with a photonview, but what is
the standard way of doing things like this?

Both players need to know that both players are ready. So i can start instantiating network objects etc..

Thanks!
Keimax