[…], it makes for less files anyway.
In this case not, no. Battler Flipbooks swaps out the whole image per animation frame, so you can’t have multiple frames in the same file. (There’s no image part picker UI I could use in the parameters.)
There is one bundle that combines Entrance and Occasional flipbooks with Sound Effect Events. That’s effectively 20% off for that combination.
That said, Entrance Flipbooks wouldn’t work for you since you want the state to be visible, and Sound Effect Events is trickier to use since it requires note tag scripting in the flipbooks. (I can’t make that easier in the plugin parameters, unfortunately.)
For your purposes, I would start with just Battler Reaction Flipbooks and see how it goes. Occasional Battler Flipbooks is something you may want to consider for custom collapse animations or basic enemy attack animations (if you currently use plain non-animated enemies).
Let me know if you need help with anything! I’m currently a bit too busy to make entire plugins, but I can still provide support for the existing ones.