We are remodeling our family room and I am considering rebuilding our fireplace mantle so that it can house our Panasonic 45" LCD projection tv. The fireplace is not used very often. I don't believe the heat will be an issue because of the distance from the fire, and obviously it will be sitting on a wood mantle that can't get too hot. Is there any issue with the tv being above the fireplace as far as possible smoke and dust? Thanks in advance for your help.