Hi Karen, and welcome to the HOD Board!

We have loved doing HOD in our home for many years now, and I think you will find it has the excellent living books of Sonlight, along with a great balance of hands-on, activities, discussion questions, and Bible study.

We've found the placement chart to be right on track for our kiddos too. The first page of it is more important than the time period, etc. that follows. As far as the extensions, they have their own schedule in the Appendix of the guide. I think you'll find this board to be very encouraging and helpful. I'm glad you are here!
In Christ,
Julie