Actually before reasearch, that was the direction we thought we would go. The issue is, we are designing a lot of Passive solar into it. With the cool nights, and a tight, well insulated home, your radiant heat will typically charge your floor in the early morning hours. Then when the sun comes up, your floor is charged and the passive solar does nothing but overheat the space.
This information was found in a number of places including local area Architects.
Because the climate is very dry to start with, the humidifying is definitely an issue in my house. ( at least that is what I have been informed!!)