My daughter will also be a sophomore starting Adv Math next year. I wanted to slow down math a little since I really do not feel that she will go into a math or science field and even spreading Adv math over two years she will be able to complete Calculus before graduating. When I started looking into it I found that the curriculum really is not intended to be done in 1 school year for the average student.
I called Saxon and spoke to a teacher/consultant. He said that he had taught the curriculum in a small class setting with very bright math students and did not even try to finish it. I know many do not have a problem completing the course in 36 weeks (my daughter could as well) but I did not want it to go so fast that she forgot it all. I have heard that sometimes it hurts kids being so far ahead in math when they take the SAT / ACT tests. I am not suggesting this is true for all, it is just something I heard and decided to consider for my daughter.
What I did after talking to Saxon and researching is scheduling lessons 1 thru 80 this year including tests. She uses the Saxon teacher CD's, so the first day of the lesson, she watches the lesson and does the odd problems for the lesson. Then the next day she completes the even problems (no video). As it worked out under this plan, she does math 38 weeks, but a lot of weeks only have 4 days of math. It was recommended I call it Geometry with Trigonometry for this section.
Her Junior year we will back up a few lessons to do review (it was recommended to backup to lesson 60, but I want to see if she needs that much or not) and that course will be called pre-calculus.
Many kids could do math just 2 days a week, but my daughter does better doing it at least three but usually 4x per week. For her style, I would rather have more days but less problems then less days with more problems. Since she is used to doing full Saxon lessons, doing 1/2 lessons a day will be a break for her. Your students might do well just doing it 2 / 3 days a week.
Here is a link to a YouTube video I found in a post from someone else that helped me.