I tried it too and I realized have not changed that much. I got some new Crit girls recently but the main changes are just more lvl 100 and more super ampules.
I deafeted him easily with 4 teams. I guess skill act + damage up after hit is better than I thought after all. But I don't have Queen Anemone on my main and RG Hydrangea is too expensive for a girl I don't like enough. I hope they will make another good RG like that sooner or later.
Did you tried to use both of them in the same team? It could be very interesting.