Castor is positioned correctly.
I'm positioned correctly (-1, 0).
Seliad is positioned correctly (0, -3).
Dillion is positioned correctly (0, 3).
Tria is positioned correctly (0, 5). It's risky, of course, but from this position, she can heal both Seliad and Dillion simultaneously, and she can also reach me (although I'd need to be healed separately from the others). Tria has a range of 8.
Let's have Ayano stand to the left, behind me, so she can reach the armor with her spells.
That's the idea. But I'm not in a hurry to start the battle. Maybe the others will think about the practicality of clustering together so that, if necessary, Locken can cast a barrier, and we can heal under it. Maybe they'll decide not to attack the statue after all (even though it's red, and there's a 95% chance we should). Maybe Nebo will say he's too close and want to reposition a character.
In any case, I'd wait for Nebo. No matter how much I like to move quickly...