UCLA and UCSB chances?

Advice? Don’t send your SAT’s. Your ACT is high. Your GPA is high. You have great ECs. You are a contender for all of those schools. UCSC would be the most likely. UCLA is in high demand from OOS applicants, so there would be more competition. All the statistics from previous years (applied & accepted in-state & OOS students) are readily available. Do an internet search.

You have a good likelihood of getting into one or all three of those schools.