Thread: Advice and Suggestion Needed

So now I got stuck at strategy for Messenger From The Den map,
Current Line Up:

->Open Spoiler<-

Plus : Stray50CC46, Shiho50CC40, Soma50CC40, Monica50CC41, Kerry50, Cecily40, Cypria40, Yuyu30

So after seeing keykii video, which make me think impossible to do the same cause lack of ninja or rika. Can anyone suggest what needed to exchange that tactic to pass that map?

Note : I have some plat armors if needed to max Dahlia/Kerry for this map