Chance me

JUNIOR
Basic info: asian male, california, both parents went to college, pretty high income, competitive high school with 400 ish students (does not rank but at least top 10%)
Academics: 3.86 UW, 4.32W, UC GPA = 4.4 (for reference for UC schools)
taken max AP/honors every year but school limits pretty heavily (2 freshman, 3 sophomore, 4 junior)
Honors/AP: freshman - alg2,english, sophomore - precalc,english, chem (self-studied for ap test - 4), junior - englishlitAP, bioAP, calcbcAP,spanish 3H
SAT: 1550 superscore (750 EBRW, 800 Math), highest test = 1540
SATIIs: Math 2 (800), Chem (780)

EC’s

  • VEX Robotics (9-12)
    win various local and state tournaments and awards
    attend CA state championships every year
    (hoping to make it to worlds this year - would this look good or is it too common?)
  • 3rd degree black belt in Taekwondo, working towards my (4th) master degree (since i was 7 y.o. - 12th grade)
    assistant instructor - lead classes individually including color belt classes and black belt classes closer to my own level
  • School “Shadow guide” (11-12)
    act as guide to prospective freshman (basically just take them along with me during school day)
  • Teacher assistant for Spanish (11)
    mainly grading assignments and papers for teacher and occasionally helping out students
  • Volunteer at local hospital (11-12)
    will have ~150 hours by senior year
    just simple work around hospital as well as interaction with patients
  • Volunteer at soccer camp for kids with autism (10)
    pretty self-explanatory
  • work at seasonal hot chocolate shop (9)
    simple tasks like being a cashier, making drinks, and administrative work
  • immersion trip to Cambodia (11)
    helped at local school, teaching robotics
  • tutoring club at school (11-12)
    tutor in math, science, english, and spanish
  • teacher assistant for catholic high school entrance exam, called HSPT if you’re familiar (11-12)

I am very interested in the sciences and I will mostly likely major in something related to biology or chemistry. What are my chances for the UC schools as well as out of state public schools like UW, UNC, and UMich? Also, do you think T20s are viable options or are my extracurriculars too weak?
Thanks!