@JacktheRipper 

Most people in your situation have homes in different time zones.  That can be an Achilles heel for setting time-sensitive features like away mode or schedules.   This is because time is set or instead updated via the app so all devices in an account are limited to one timezone.  If this applies to you, I recommend setting up 2 separate Kasa accounts since an account is free. 

For your situation, you can try to use the Alexa routines and grouping feature in the Alexa app.  You can also great specific grouping of products in the Kasa App.  For example, you could group all of your devices in So Cal as a So Cal group and Oregon as an Oregon group.  The thing with groups to know is that it only controls the on and off function.  You can use smart Actions to set a schedule for groups but keep in mind you can only have 3 active smart actions at this time. I know that limitation sucks and we have been urging the development team to do something about it. 

Another option is to name the devices specific to your region so for instance So Cal Master Bedroom or Oregon Living Room.  This way when you try to control a specific property you can do it by region.