The trick to doing the early hours is to also do the early evening so my first arrive just before 6:45 but all are gone by 4:45. Hubby leaves for work at 6:20 so I am up anyways - if he didn't wake me I would for sure sleep through so this way as long as I am up might as well start the day. What I really like is that most nights the kids are gone or I am down to only a couple before I have to start making supper as we time it to be done so we can watch the news and eat.
When your own kids get to be school age you will for sure appreciate the earlier finish time as it means getting kids fed and out to evening activities a lot easier.