I really have to question Dan's capability to handle the young kids for extended periods of time right now with his level of stress.
We did not like the alternating weeks and went with a 5/5/2/2 plan. It works out great because we always have the same 2 days with and without the kids and alternate Fri/Sat/Sun. That way I can schedule cub/girl scouts that I do with the kids on Mon and Tue and my own personal golf lesson/time with G40 on either Wed or Thur.
Your D2 (almost 3?) may have quite different needs and require a different schedule. Here is the document we used to determine various possibilities:
