you could do that. but don't forget you can add staurous in the music score where it makes sense to take a breath
also martyries and pauseis are good points for a breath
see at the attached page, where the crosses are added/marked
(very important also when a choir chants together for all to take breath at the same time)
see at the attached page, where the crosses are added/marked
(very important also when a choir chants together for all to take breath at the same time)