Can you submit to schools seperately?

I am applying to Stanford, and three other schools through the Common App. I plan on applying Early Action to Stanford by November 1st, but would like to retake the SAT again in November to hopefully improve for the other three. Is it possible to submit the applications at different times?

Also, if my SAT score is significantly improved in November, I plan on cancelling Early Action to Stanford and being considered as a regular candidate with the new SAT score. Is this possible through the Common App?

Thank you