Any request for cashout on or before the last day of a month will be paid on the 20th of the following month.
You can reverse your cashout request and increase your new co amt for a couple of days -- but don't go beyond 9/30 to request the new cashout amt.
If you do, you'll be in October -- and any request from 10/1 to 10/31 is paid on 11/20. (This assumes that your co request is approved and none of your offers have been reversed.)