Plug your grades into the RogerHub calculator but include your 9th grades also in the calculation with a cap of 8 semesters of honors points for the UC approved Honors/AP/IB or DE courses taken 10-11th grades.
https://rogerhub.com/gpa-calculator-uc/
Check the SLO Freshman profile to see how your CSU SLO GPA and test scores compares with 2017’s incoming Freshman Class. 2018 data not yet posted.
Business: Average SLO GPA was 4.01 and SAT of 1390. Projected acceptance rate of Bus Admin= 28%
Link to calculate MCA score: http://talk.collegeconfidential.com/cal-poly-san-luis-obispo/2047291-how-to-calculate-mca-score.html
You have not given enough information to calculate your MCA points so you should give it a try.