Operating Temp & Coolling

Have '92 Seville base model with 4.9L Trying to figure out some things on the cooling system.

What's the normal operating temperature of this vehicle? When does the thermostat first start opening and when is it fully open. With the thermostat open does the upper radiator hose warm up first and then the lower? When are the fans supposed to come on? What's the highest temperature that should be allowed before the engine should be shut down?

Thanks,

David