Update to the Mailman stack in prod

Hey folks! I've been working on updating the Mailman production code. There are big schema changes that I tried to optimize and finally came up with a solution that will minimize unavailability. I think I need a 1 hour window of planned outage. I'm at UTC+1 so I could do it in my morning, while America is still sleeping. I don't think I'll need any help from you even if things go bad. Do you have a preference as to which day ? (this week preferably) Aurélien