every patch, no matter how large or small, will cause at least 10 hours of downtime. The fastest an update was ever done was about 4 hours, and that occurred 1 day before the last banwave.
Since this is a somewhat major patch, you should probably expect at least one more hotfix this week to fix some issue that manages to work its way into the game. I wouldn't be surprised to see a hotfix every day until saturday, which is pretty common. If that's the case, don't really expect to be using the bot before this weekend.