I'm looking to purchase a wood burning fireplace insert. My fireplace opening is 39 inches wide by 34 tall (but arched), and is 22 inches deep. It is in a 22 ft x 24 ft family room which is not directly open to the rest of the house (access by one doorway from kitchen). Since the fireplace is fairly wide I would like to put in an insert that can take as long a piece of wood as possible (20 inches would be nice), but don't want either too expensive an insert or one so big it will overheat the room. I also would prefer an insert that has a small heating (cooking?) shelf on it. The surround needs to be tall enough to cover the 34 inch arched opening, but not so wide as the fireplace has a small wood storage nook adjacent to it. Any surround wider than 54-55 inches will overlap this nook. Any recommendations would be appreciated.