He uses 4 because he takes lots of other gear. If you are using as a stand alone the you will need upwards of 10. I have never used it so i cannot tell you from experience only what I have read and from other users experience.
It does mnot change the fact that you had to ask about PCT which you should have known before attempting to take AAS.
I agree with everything except the PCT thing, that shit can be really confusing.