Payment number

We are starting a new payment process in 9.1 wherein we send an electronic file to the bank to print out our checks on our behalf. We will also be printing checks inhouse. For the outsourced checks, we may setup a payment instrument of T that would call the R04572T2 per standard process. This way we can get records on the A/P Payment Tape file. Our concern is that the check number for regular check would come from Bank account information P0030G and the AP Tape would come from the next number. We may run into issue of overlapping numbers