Configuring Payables for EFT Payments - Bank Payment Setup

I need to configure payables to process EFT payments.  Currently, we use the following documents 'CHECK' and 'WIRE'.   I have a set up question.

In my bank account, I have the following

DOCUMENT               LAST USED           LAST AVAILABLE

CHECK                         83087                     9999999

WIRE                             769                         9999

 I need to set up my EFT Document, but I know that I have to have unique numbers for that document.  Should I set up the document like this?

DOCUMENT               LAST USED           LAST AVAILABLE

EFT                          100000000              999999999999999

Or is there a better way to configure this?  Thank you.