Song/Track Sequencer for Shruthi

Dear MI community,

As I am more a hardware guy, I always try to find a way to avoid laptop/computer when making music.
That’s why I developed an arduino based sequencer for my gears:

The thing is that I REALLY enjoy the Shruthi sequencer (remind me some sweet old trackers :D) and its groove is is really good.
The only limitation is to start/stop the sequences and to chain them.
That’s my understanding that the work around is to save each sequence in a patch and change/chain them with Program change. Correct?
That’s would mean that my arduino sequencer should just send a note+Program change and chain these info to make a song/track?

Anyone has experience with that? I have seen another similar post with ableton but was wondering if someone tried a full hardware config for it.