Make the small spaces work harder
The 47.5 sq ft gym, 15 sq ft sauna and 35 sq ft gathering nook are compact. I would work through actual equipment and seating choices before treating these rooms as settled.
A little closer to everything.

Rendered still · R28
Living room · R28
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Furnished design study · 2,478.00 sq ft conditioned gross / 2,162.75 sq ft net · Garage excluded from conditioned area. Room dimensions follow the original PDF.
Circulation: the denominator matters. A is 11.97% and B is 11.78% when measured against gross conditioned area. Against net room area they are 13.69% and 13.50%, so both FAIL a net-area interpretation of the 12% target. C is 12.11% gross and 13.76% net and FAILS either interpretation. No hall exceeds 120 sq ft.
Read the source checks · Book page 16 ↗The 47.5 sq ft gym, 15 sq ft sauna and 35 sq ft gathering nook are compact. I would work through actual equipment and seating choices before treating these rooms as settled.
The models still use simplified upholstery, art, vegetation and material textures. Hardware, trim, lighting and storage deserve another pass tied to the family's actual belongings and preferences.
These are furnished design studies for discussion. Structure, cost, code compliance, and buildability have not been assessed. The browser model simplifies the native Blender materials.