As far as your 5 questions about Atkins I dont know if you will get many answers here as this forum is just for TKD or CKD diets.

It seems to me that a CKD is not the best option right now, in my opinion it is best for experienced weightlifters as well as people who are already fairly lean, in men less then 15 percent bodyfat. The workout routine is very intense and requires you to train in a very specific way.

Try doing a search here for information on the TKD as I think it might suit you better. This is basically an atkins type plan with specific carbs taken in around cardio or weight training...it might fit perfectly for you.