I am reading Teach Your Own by John Holt. My kids are only 2 and 3, so I can't say much from my own experience, but my kids are radically different from each other, and respond in completely different ways to everything we do. I know they will need to learn differently, which is why what John Holt says makes so much sense to me. His definition of unschooling is not one method of teaching, but the idea that each child is different and needs to be treated accordingly. He says that unschooling to one child may mean using something like Calvert Curriculum, while to another child it may mean a completely unstructured day, with the child reading what he or she picks out. The point is that the child is directing it: the curriculum is made to fit the child, not the other way around. If I were you I would probably try something different, and not feel guilty about it. Your child will show you the best way to help them learn.
On the other hand, moving is a big stress. Even if the kids are not stressed out firsthand, they may be picking up on any stress you or your husband are feeling.
Follow what you think is right, not what the other posters think, and not what a book says. You know YOUR kids, after all!