My room is 22’ x 26’ x 14’ ceiling. I sit 18’ away from the 150” screen.
My speakers are the RBH SX-T1. RBH May still have some available on clearance sale.
But if price is not an issue (since you mention the $10K DataSat instead of the less expensive Monolith or ATI pre-pro),I would get the new RBH SVT standard or Reference towers.
Here is the Audioholics review:
https://www.audioholics.com/tower-speaker-reviews/rbh-svtr-tower-reference-speaker-review
The Reference SVTR will have some more bass capability, but both versions have dual 12” woofers.