The firebox size is shown in the plan. The fireplace is on an 11' wall with a cathedral ceiling of 15' and the entire fireplace with mantle is 6' high according to the plan, but the specific details are not suggested except to picture it as stone with a raised hearth. I have a 7'X1'6" horizontal window at 8'6" so there is 1.5 ft above the top of the fireplace on the plan. There are two windows 2'6"X6'8" approximately 12" from the stone at each side of the fireplace. There are book

cases beneath the windows on each side of the fireplace. Should I put the stone up to the horizontal window and just put a mantle self. Suggestions please on how to make this look right.