Beteween 3h books 6 or book 7, I belive 3h book 6 in current state is a better pick.
While I also like the idea from PsyGemini potentialy excluding dr. Pershing story from the movie and having it being as interlude bonus.
So far The dr Pershing part is there just for worldbuilding of New Republic and so far has little to no impact on the overall Mandalorian/Grogu story. And if in the future this part gets important it still can be implemented in according to the new info. This part is also very flexiable in terms when on the timeline it can go.