Incoming Junior in high school, am I doing fine so far or should I look for more EC's?

It’s the middle of summer vacation, and I’m feeling a little paranoid about whether or not I am doing fine in high school so far for a UC college, hopefully a Computer Science Major.

Freshman year: All A’s
Computer Programming Java/C++
English
Modern World History
Geometry Honors
PE
Biology

Sophomore year: All A’s
AP Computer Science
PE
Algebra II Honors
Spanish I
Chemistry Honors
English

Next year:
AP US History
AP Lang
AP Chemistry
Precalculus Honors
Spanish II
Intro to Engineering

EC’s:
NHS for 1 year
Secretary and co-founder of rock band club
VP and co-founder of indian culture club
Coding Club
Science Olympiad for 1 year so far
Tutoring kids with autism (don’t know if this counts)
Web design internship for 2Physics.com
Volunteering at my library, helped organize events and administration

This year i’m thinking of doing Game Coding for my school’s FBLA team, but is it too late?

PSAT: 1450
^ not as good as I’d like it to be, so im studying this summer.

Looking pretty good! Tutoring kids is definitely an EC and shows leadership. It is never too late to do any activity because you should do it because you want to do it.

UCs are very much about GPA/SAT scores.