According to "Steph" at Zanesville KMart's customer service, they ARE participating in super double coupons this week. All coupons are included (not just proctor & gamble) and there is NO LIMIT to how many you can use.
I also asked her what days they stock the shelves. They receive trucks Wednesday and Friday. So, even if you wait uintil Saturday, you should still be able to get some deals.
I would recommend calling your local KMart and asking these kinds of questions before venturing out... Have fun!