UCSB Computer Science Major and Transfer question? (RANK ME!)

Im a junior and my GPA is a 3.9, however i found myself struggling on my ACT/SAT test with me getting a 26 on the ACT and roughly about the same equivalent on the SAT.

As for extra cirriculars, for 4 consecutive years ive done Waterpolo (not expecting a scholarship bc im not that good) and Swim Team (which i am quite good at but also not amazing; if there are any swimmers out here reading this, i can do a 100 free in 56 seconds). I also have a job as a lifeguard and i have around 120 hours of community service.

In terms of my math skillzz i am currently in Precalc Honors, and i will definitely go into AP Calc next year. In addition, Im in AP Physics 1 this year and there is also an AP Computer Science class that ill take next year. Im also planning on taking the SAT Math 2 subj. test
Based on all of this, what do you think are my chances of getting in? I know my GPA and ACT scores are not the average, but i just want to know how these extra cirriculars would benefit my chances. Also if you have any advice of how you got in, or what you personally did let me know. Thank you!

Is your GPA of 3.9, your capped weighted UC GPA since UC’s only consider 10-11th grades for the a-g courses?

https://rogerhub.com/gpa-calculator-uc/

25th-75th percentile for ACT at UCSB:
UCSB: 28-34