People who make their music in picturesque, relaxing environments often think better and capture those thoughts better. So you are way ahead in the vibe dept.
The room and gear just need to not screw that up, and sound like you want. And yes, it's a lot of dough.
But all this forethought when a slab is there is good timing.
It's usually as strenuous and expensive to build a bad room.
Again, Glenn's usage of the footprint is how I'd do it.