My experience with a midi bay is limited to Opcode's Studio4 (8x8). All of the set-up parameters are configured through computer software.
How many tracks you have access to will depend on your studio devices and your sequencer software as well as the bay. If you have 8 midi devices each capeable of receiving on 16 channels and the A880 is able to address each device seperately, you should be ok as long as your sequencer will support 128 tracks. Sorry I couldn't offer you anything more.