Cal Poly SLO uses a different GPA calculation 9-11th a-g course grades with the 8 semester Honors point cap for approved Honors/AP/IB/DE courses taken 10th-11th.
SLO considers your HS course rigor including Senior classes.
Here is SLO’s application review criteria and Work/EC hours are considered.
SLO admits by major so much will depend upon the major you applied in the College of Agriculture, Food and Env Science.
Here is the decision timeline from last year 2022:
Cal Poly SLO admit wave started on March 10, 2022 with a mixture of OOS and In-state applicants. Waitlist decisions posted March 18, 2022 along with a few acceptances. Admits for students requiring a portfolio review trickled out on March 24, 2022. Denials were posted on March 30, 2022.
If you need to submit a housing deposit for another school, I would go ahead since many housing deposits are refundable if notified early.