Ben,
Glad to have gotten into your thread while your new house is in the planning stages. Yes by all means use radiant heat in the floor. Use geothermal hvac heat exchanger, the only system which returns more energy that it takes to run it. The heat exchanger coil(s) can be buried, stuck in a well(s) or in a pond. What does your property have to offer ?
deralte (aka Emmett)
