Hello. I am new to Sysex programming and just understand how to use it to remote the preset change, almost.

Questions are;
-I will have 2 MADI bridges in the same MIDI network, so do I need to set Device ID on each device?
-Should I set Device ID for each device directly, before I put both devices on the network?
-Are these correct sysex messages to set up Device ID, before start sending preset recall #?
for example, #1 for FOH, #2 for Backstage
  Set Device ID1 for FOH              F0 00 20 0D 65 7F 20 0A 01 F7
  Set Device ID2 for Backstage      F0 00 20 0D 65 7F 20 0A 02 F7
                         
then
  Recall preset 2 for FOH                 F0 00 20 0D 65 01 20 05 02 07 01 F7
or should I separate into 2 successive messages?
  Preset 2                                     F0 00 20 0D 65 01 20 05 02 F7
  Recall it!                                     F0 00 20 0D 65 01 20 07 01 F7

I'd appreciate any help with some explanation.
Thank you!
HN