Trying to build my water team for next UE

SSR:
Ryu-Oh
Aphrodite
Neptune

SR:
Belphegor
Atalanta
Phoibe
Pruflas
Oceanus
Noden
Nike
Kikurihime
(and some not worth mentioning....)

My thought was Herc?
RyuOh has cover a lot of debuff so i think going Joan is quite some waste

Decision please?