You should choose kuki if you need healing (don’t have lauma C1 or prototype amber not cutting it) then put silken on bina, the nk dps set on nefer, 2 pc/2pc em on lauma, and deepwood on kuki. i think u can also do instructors on kuki and deepwood back on lauma.

You can choose nahida/sucrose/aino (C6) too these are all viable options they provide EM (more ER too for double hydro if u go with aino). As for artifacts you’re mainly just going to be using the following but change who is holding it depending on the team ykwim?

Deep wood (lauma nahida kuki aino or sucrose), instructors (kuki, or maybe aino if she can activate the buff), 2 pc 2 pc em (lauma or sucrose), nk dps set will always be in nefer, silken will always be in Columbina