Just looked at all your photos - are you sure those roof rafters will handle a good snow load?
 
What's your square footage? It doesn't look very big from the photos - not that it would be a bad thing. There is far too much wasted space in most new homes these days.  
Beautiful spot. I don't think I could handle the heat and humidity though.  
It's not the typical image we have of Texas up here. When I think of Texas, I picture semi-arid scrub brush. I guess there's more to the state than is commonly known. 
Best of luck to you  in your new home!