I decided to hummer down my old-style boulder-faced fireplace. The project took two days, but when I was finished, i realized, the the actual fireplace opening is bigger that it was before, because it was faced over the top of the opening. Now, I can’t just leave it, since I need to put TV over it, and currently there is not enough ceiling height (and no one wants to watch TV 10’ in the air). Any advice on what can I do to cover the opening and make it like 30” instead of 36”? Maybe do metal framing and durock it? I am stuck.