seems to me you are a strong applicant. I don’t think the shadowing is a hugely impressive EC, but research projects and work experience prob are. and your grades and course rigor seem great.
I think you will get into UW and GW and UCD for sure. Probably with merit $ from GW.
UCSD is still a match but not guarantee.
And UNC is a reach OOS for anyone but you never know- might depend on your high schools track record with them.