My fireplace is out dated. My house was built 23 years ago in a suburban neighborhood. I would like to have a mantle, but mainly i want to install a 55" flatscreen tv, because there is nowhere else t put one in this room. There is wood there now, but upon closer investigation, it is not sturdy enough to hang a heavy tv. Any ideas about what to do with this or how to go about hanging this tv and installing a mantle?