Why Katan and not Scubb?
I'd also use Amiral Coco and Taljion
What San said, id add Taljion and Amiral Coco to compliment Hawkins, Katan is only one more dam, Scubb better than her in mono 100% of the time.
You're also lacking some att. manipulation so I would suggest adding Raeth. or if you want switch out Selma for better 5* like ahkub or Dahlia Cr.