The strategy for CA kids is generally to apply broadly across the UC campuses, because holistic admission can be unpredictable. Very strong kids can be surprised that they don’t get into UCs they consider “low tier”… while on the other hand, some kids receive rejections from most UCs and then are surprised by a UCB acceptance at the end of the process. Write great PIQs, apply broadly, and see how it goes!
OOS public university admission can be a bit more predictable, and decisions for the EA round typically come out much earlier. So it’s good that you have chosen some OOS schools for your list as well.