While I do need a bit of luck to clear this (a lot of ship skills need to go off for high enough damage), this is doable for me:
i really need to level up my girls a lot, but doing so without burning flower gems is gonna take a while. weakness abuse isn't gonna cut it for 9-5 or reliable 9-4 or even 9-3 clears sometimes (really bad luck will get me there). this was more done for the gifts