We have 2 guitars, bass, piano (keyboard), secondary keyboard, flute and 5 vocals and a lead vocal (12). In the church I’m at, the monitors have been a consistent issue due to communication from the sound guy. I generally try to help each person with the app but once we start my hands are tied up playing guitar. I feel things would greatly improve if everybody could tailor there own mix and let the FOH worry about that end of things.
I thought of going with a combo of Me 1 and Me500, but what you’ve described would be a headache I think.
I’ve also considered giving the vocalists wireless iem’s and let them use the app since we’d free 4 aux mixes up by going with the me 1’s for the musicians. I just don’t want things to get overly complicated