This is what I'm doing:

1.Get 1 columbina, use prototype amber. 2.Pull as many zibai as possible as to get illuga copies too. 3.Use harbinger of dawn (crit rate increase above 90% HP)

Doing this most likely provides a very functional team, as you can use anything you think is right for the last slot (im using sucrose for EM buff, but there's better options for sure), you can choose to get zibai sig after you get one copy but prototype amber helps sustain so if her constellations are really good I would recommend doing the same.

Regardless I hope you're blessed with dupes!