Teaching SAT prep Course at my school - Questions

I am teaching a half-year SAT prep course at my high school, alternating days with a colleague of mine- one day I teach math, the other she teaches English, all to the same group of students. Just a few questions/comments:

1) I am interested in implementing Khan Academy SAT prep to this course, but am having difficulty getting into a routine? How often should I have students on the KA site? Daily? Weekly? Full or half periods (our periods are 55 mins long)?

2) Based on this suggested length, to ensure that students are in fact working and not exploring other websites, what is a realistic goal for "energy points". Do students have access to their energy point totals?

3) I find it very inconvenient that I cannot assign SAT skills practice to my students. My students have all made accounts, and are linked to their college board accounts. I understand that KA generates practice for them based on their strengths and weaknesses, but there are days where I would like to dictate the type of practice they do. How can I remedy this?

4) Is there a way for my colleague and I to see the "energy points" students earn for a day? I can see when they work on math, my colleague cannot see that progress. Neither of us can see when they work on reading/writing assignments. Is there a way for teachers to see each others progress? It would be incredibly beneficial being able to get a more wholesome view of how our students are doing in general.

I think that the concept behind this resource if phenomenal. However, I do find it confusing and frustrating at times - to navigate, to find information (like answers to my questions above), to have a more convenient way to monitor/share information back and forth with students so I can see their progress, level of work, etc.

Please give insight!