So essentially you use your CC for like two weeks and then make the payment so its before the closing date, but then the problem is your left with whatever else your gonna use the CC to purchase in the final two weeks leading up to the due date?
Lets get it clear,
Every bill has a 30 day cycle, lets say from Feb 9 to Mar 9, all the charges made in that 30 day will be on one bill, so your bill closes on Mar the 9th and then you have about 3 weeks until your due date,
So you would pay off most of your bill beginning of Mar(ie Mar 5) so when the bill closes on the 9th your left with little charges on your account which you have time to pay off untill your due date.