Tactica is dying. Let's use an Easter Cactus down on it!

Here is my current debuff+Kerria team prototype with the new promotion we got.

Halloween Peony
-20% ATK for 2 enemies
+20% ATK
+60% ATK after 2 turns
+30% CritRate

Snow Drop
-15% ATK
+30% ATK
+60% ATK after 2 turns
x1.2 skill rate

Promoted Dahlia
-15% ATK
+30% ATK
+30% ATK on bosses
x1.2 skill rate

Kerria
+48% ATK for 3
+48% DEf for 3
Damages based on HP
Evasion

Lavender Valentine
-15% ATK
+26% ATK
+15% Damages on bosses
x1.2 skill rate


At the end I got:
x1.6 skill rate. x1.8 would be better but that's already good I guess. Kerria reaches 60.8% of skill act with this.
+106 ATK for 2 girls and +154% for 3 girls, kerria included.
Up to +136% and 184% on boss fight with 15% more damages.
Kerria and 2 other girls can reach +304% ATK after turn 2 against a boss. I think it's a decent ATK buff.
As bonus I also have +30% Crit rate. Very nice anyway.

On the debuff side, I'm at -65% ATK on 2 pests and -45 on the last one (if there is 3 pests). Not the max but it's still decent I think.

What do you think about that team? Do you think Dahlia is a good member? Or should I look to another girl? (Aconite is not an option, even if she is THE option).