The arboretum plans got rained out, but my friend Michelle and I sat around and talked home school philosophy. We agreed that why you home school dictates how you home school. You need to know why you want/feel called to do it. If you think the only thing wrong with school is the political bias, you'll probably "school at home." If you think the whole concept of school crushes the child's natural aptitude for learning, you'll probably "unschool." Unless you firmly believe in the school model (sticking to a professionally prepared curriculum teaches discipline!) You need to know what your style of teaching is and what your kids styles of learning are. What do you want your kids to be like (generally) when you are done? How much structure do you and/or your kids need to be happy?
I think Michelle and I are both information geeks (except she has a much better fashion sense!), so we could talk all day about multiple intelligences and educational theories. She showed me a book full of charts to help you think through all these issues. It was called 100 Top Picks For Homeschool Curriculum: Choosing The Right Curriculum And Approach For Your Child's Learning Style.