Nefer team double hydro?

Is it okay to use this team:

nefer r1 (nsu) lauma (deepwood) nilou c2r1 (silken moon) kokomi (instructor)

would this team be better if i replaced kokomi with nahida with prototype amber? I just like kokomi more with her healing and thats it. (and i only have c0 aino, so she would be doing the same i think)