A cost cutting measure on an 8K square foot house?
You know, there are priorities, then there are STUPID priorities. To my way of thinking, installing what amounts to a belt & suspenders approach... well, you know where I'm going.
Yep, I know that air handlers and ducts have to go in to do the cooling, but let's face it, a unified system isn't exactly the best way to do it, either, given the different natures/requirements of heating vs. cooling. For example, heated air is best released at floor level, while cooled air is best released from ceiling level, but you rarely see houses with the dual ductwork to do that. Why? Cost cutting measure.
I've been in several homes with radiant heat and hardwood floors, and there's been no warping/splitting. Maintaining proper humidity levels year round and not "shocking" the floor is crucial, though.
Finally, there's blowing air to heat a home in general, which I despise. I'll never own a home with forced hot air again if I can help it.