HUM,, Not too sure if that will work or not. If I understand the question right, you want to do Atkins like 6 days week and than one day a week do CAD, right? I have heard other people try this and from what I can remember it does not work. I guess the only way to see if it will work for you is to try it. You wiill know soon enough if it is going to work, but I really have my doubts. One day a week, will be like a shock to your system.

If you try this, let me know how it goes.