Do not submit SAT unless you plan to retake. Submit ACT instead. GPA and EC’s are good. Spend time on your UC essays and make them great. You look like a competitive applicant minus SAT, so apply and Good Luck.
Yes. My older son submitted only his ACT and SAT subject tests 2 years ago. Since the SAT and the subject tests are taken on different days, you can pick to send the SAT subject tests separately based on date.
UC Davis states somewhere on their website, that SAT subject tests can only help not hurt your chances. I looked this up last year for my other son whom applied to the UC’s. Since UCD does not recommend subject tests, it makes sense. Older son had 1 great SAT subject test score of 790, 1 average score of 680 and one bad score of 560 which he submitted. He was accepted, so how much of an impact it had, ??? As @NCalRent stated above, UC’s can be unpredictable so apply to several. Good Luck and Go Aggies!!!