Really you had a teacher like that?
Ok this is what I did - I've sock drawered the Associated cards they are no longer in my wallet. I've done the same with the BofA and FIA cards but put a small recurring monthly charge on each that comes nowhere near the statement date so I can pay them on my second pay day every month (not that I have to wait just a good time to remember to do that, otherwise it's just use and forget to make this process easier).
The Amex cards get the bulk of the spending but Chase gets rent and I'm sure other things as well and is the go to card when they don't take Amex. The FNBO card is a rotater.
A little more complicated than I'd ideally like, so maybe eventually I put another specific payment on the FNBO and take that out of the picture and just carry 3 cards in my wallet. That will make life a lot simpler it's just too damn complex trying to manage 8 different cards, at least for me, on a monthly basis. I mean I CAN do it, I just don't WANT to do it. Life is complex enough without making it worse.