I currently have a Jotul Nordic QT which is too small to heat my one-room 950sq.ft. home. Saw a large Lopi insert at a yard sale and tempted to buy it. I don't have a fireplace and would like to install this in the same place w/same stovepipe - *edit* - just found out the Lopi has 8" pipe and my Jotul a 6" - do I need to replace the entire length of pipe? What are the clearance requirements for inserts? What else would be involved? I have unfinished concrete floors and a slate hearth - do I still need to put legs on it? Any advice appreciated. I need to sell the Jotul if anyone is interested (bought new, used 6 winters, located in SE Arizona). Thanks