The chain we're on and the comments I originally responded to have such concerns. And I mean, if it's not going to be reviewed by humans then really what makes 9 days too soon ? Should the code just sit there collecting dust until everyone agrees an arbitrary amount of time has passed ?
Yes! For the size of the change, I think 30 days would be okay. 3 months would be better. Run them in parallel. Take some time and iron out most of the kinks. Don't break shit people rely on!