My chimney will be a through the wall and up. It will have to go through the eve overhang soffit and up through the roof. Total I'll have about 25 feet of chimney. I am struggling as to whether I should hire someone to do the job or do it myself with help from family, none of which have ever done this type of chimney install. I am looking to use the supervent class A 2100 stainless from Lowes. I would love to do it myself for the savings and the satisfaction of doing it myself, but I also want it to be done correctly and safely. I have the name of a guy who does installs for a stove seller. The owner recommended him to me as he does installs on the side also....what would you all do?