Glenn Herbert wrote: It would be even more effective to use an interior load bearing (stone) wall as part of your mass, as that could radiate to the rooms on both sides and even out the comfort.
Don't destroy the earth! That's where I keep all my stuff! Including this tiny ad:
Permaculture Farm with Food Forest for Rent in the Ozarks.https://permies.com/t/155798/Permaculture-Farm-Food-Forest-Rent