Ideally, I would say we should take care of both of those problems simultaneously, since it would be better to not end up in a situation where Katerina feels backed into a corner and still has leverage.

[ It's not hard to guess how that would go, since Katerina keeping them at all has made her intentions and also her fear rather clear, so far as Break is concerned. ]

But that's a matter of tactics and strategics. Leviathan mentioned that each demon has their strengths and weaknesses, but she didn't get a chance to explain further. Still, we're not completely blind in that respect any longer, I would say. There are quite a few of us that have fought the demons, so we might be able to do so more effectively a second time around.