[CA] Property insurance for two rentals and one main residence

First time post here.

I have a renewal for two rental properties coming up in couple months, and currently w Farmers. Not sure if it makes sense to up personal liability. I currently have whatever standard amount it comes with. Reason being, we bought another home which is now my main residence and want to further protect myself. Guess my question is does it make sense to up personal or start thinking umbrella.

Thanks!