Right now I'm in 9th grade. I'm currently playing club hockey, I am part of the non-auditioned choir at my school this year and I'm doing the intermediate choir next year. I also am part of our school's video broadcasting team.
My advice would be to choose extracurriculars that you are genuinely passionate about. You seem to be at a great starting point, and I would definitely consider staying active in the majority of your current ecs and possibly even gaining some sort of leadership role. I believe that UCs and other colleges like to see strong commitment to an activity (i.e. four years of an activity), so staying active in many of your activities is ideal. You are still so early into high school that you can drop and add activities without it making much of a difference on your college application, so don't stress.
I'm not totally sure if my advice is totally accurate, but that is pretty much what I did, and I am going to UCLA in the fall (:
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