Well, you could try to place the absorption such that the direct mirrored reflections from bare walls are caught with the absorbent.
But if you already have a great sounding room, why change anything. Just record some close mic's on the drums and build your drums in the mix from there, i.e. have the overheads and rooms a little lower in volume. A tunnel for the kick so there is less boom from the kick in the room mic's could help. Or you could try buidling some gobo's with mic stands and heavy blankets around the kit to get a tighter kit sound and then use some more distant room mic's to get natural room which you of course can compress and blend in if you want to make the sound larger again.
Sounds like fun
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Good luck,
Dirk