Well after many hours of hard work I have finally finished my transition from an insert (Quad 2700I) to a new freestanding stove (Lopi Liberty). I tried to keep the design as simple as possible. I removed the raised hearth, leveled with the slab, and then tiled the firebox and floor. Besides squaring off the firebox and installing a new lintel I kept the chimney structurally the same for obvious reasons. Finally now after getting the inspection and the insurance signing off on it there is nothing to do but wait for the fall. Wanted to say thanks for all the information I have learned on this forum. Happy burning!