[Stanford] SAT subject tests vs Restrictive Early Action

I’m currently an IB diploma student who will be applying to Stanford this year for the class of 2021. Stanford is definitely my first choice university and I want to apply for restrictive early action for Stanford. I have not taken the SAT, ACT nor AP but there is only 1 SAT test date left before the restrictive early action deadline. Should I apply for restrictive early action with a New SAT with essay score and apply for restrictive early action or should I take the subject tests then apply for regular decision?

http://admission.stanford.edu/application/freshman/testing.html

http://admission.stanford.edu/application/deadlines/index.html

Your priority is to take the next SAT (Oct) and ACT (Sep). You need to be IMMENSELY familiar with the info on those two webpages – not asking for advice here, if you’re serious about Stanford REA

Did you really mean “AP” @itotisaac?