Any good arrangements?

A solid lineup of heavy hitters, that's reassuring! If you want to bolster your frontline, you might find more stability by slightly adjusting the order of deployment for your lighter-cost characters.

Maybe just swap the positions of Black Caster and Black Luna.

I usually don't unless a combo like ramen and rice is mandatory, but I place the wall in the bottom right to make combos easier to set up.

That's a cool setup...!