Midi routing question,3 controllers, Ipad, 3 modules.

[KrossEMU]

I would like to use Bandhelper to send midi program changes from my IPad (lightning)to all my units. Some have only USB(controllers), some mixed USB/DIN. Already have lyrics and mp3 backing tracks configured on BH.what do I need? Krome 88 >TC Helicon>EMU E64, Nektar P6>VB3, Neo Soul Keys >IPad, AX-1>IPad or SQ2-R.
Have available laptop/Win, UMC404, Yamaha MG10XUF, and an old Midisport 2-4....
Seems an ESI M4 or Iconnectivity MioXM can do the trick, but the MiO is a bit steep in price... Anybody have a similar setup running?