You should be able to use 4 Q's since you are buying 4 items.

Whether you will get the overage depends on your stores register system. We don't have either of those stores in NC so I can't say for sure. Around here, you can get the overage at some places, some just up to the price of the item & at one I believe you can get overage up to regular shelf price if it is on sale. Totally depends on how your stores registers are programmed....

However it works out, free is always good!