My 10-12 cumulative GPA is 4.35, my SAT is 2000, 580 Math, 720 Writing and 700 Reading, I’ve been in National Honor Society Grades 11-12, I was a team captain on Cross Country, and was an officer in my school’s JROTC program. Any input helps, thank you 
UC GPA? http://rogerhub.com/gpa-calculator-uc/
In-State? Intended major?
Oh yeah, applying to college of letters and science
California resident, UC GPA is 4.1
You stand a good chance at an acceptance. UCSB puts a large emphasis on your EC’s and essays, so make them amazing.
Good Luck.