Sounds like you have lots of good choices, but I thought I'd throw something else in the mix. We used DIVE physical science last year and are using DIVE again for Biology. It is from a strong Christian POV like Apologia. In fact, you can use Apologia or some other texts listed in the Syllabus. It's a CD ROM with all lectures, experiments, worksheets, exams, everything except text. The student reads the text listed for whichever text you choose, watches the lecture, completes the written assignment, watches the lab (you choose if you want your student to complete the lab as well), writes up the lab report and takes 4 exams. Both my son and I really like the teacher and his lecture style. You don't see him. You see his notes. Similar to Khan Academy if I remember correctly.