Do you have photos of the space? How much natural light is coming into this space? How high are the ceilings? What is the function of the space...family room, kitchen/great room, study.

I love wide wood floors with barn wood walls and glossy white trim (interesting contrast to the matte barn wood finish). A smoked finish on #2 white oak would complement the barn wood tones. Consider only going 3/4's of the way up the wall with the grey barn wood on the horizontal with a top cap. Do you have a fireplace in this room?