I am getting ready to install a regency zero clearance fire place. Model fp90 the chimney will be in an interior chase it will run to the roof as the room is a cathedral ceiling.approX. 15 feet of pipe total with a 30 deg offset have noticed several different piping options that regency has approved the main two I'm focused on are the majestic sk8 or the dura plus chimney which would any of you recommend? Thanks for any help it's very much appreciated!!