We have a small fireplace in our living room: outside: 30h x 30w. bottom back to front 19" & top b-f 16." There was an old LP insert in there that we took out. The propane line, power, and 4" flexpipe are in there already. We were considering converting to wood insert but we'd need to reline the flue which adds 2.5K to any stove we buy. SO... looking at gas inserts to heat small living room 600sf and hope heat will travel up the stairs where living room is. Don't need a ton of heat from the unit but some and we miss seeing flames. Small efficient gas stoves are around: Pacific Energy Tofino i20s, Kozy Heat Chaska 25. Anyone have any experience with small inserts? Any recommendations?