I need to know the pros and cons of installing a chimney 90 out the side wall then (t) up the oustide of the house total chimney 25 FT. It seems the places I would like to put my stove there is something in the way trusses. So, the only place the stove could go is in a family room with the chimney on the oustide of the house. Will this cause draft issues? This family room is located 4 ft below grade and in the back part of the house tri-level home.