I used the same team as you but with Huohuo as sustain. I rolled Huohuo for my Kafka in 1.5 and now i regret my decision😅. Compare to Loucha she have good offense supports but she is sp neutral. Even though i cleared moc 12 but I had to reset a lot because i always had sp issue
herta shop lc (s5) is easier to use and better on kafka than fermata (s5); if you really want to use fermata, you can put it on the other dot sub dps in your kafka team