Indoors, you want your black single wall pipe off the stove to be as short as possible to vent so you have the proper draft, the flue to exterior should be at a minimum height of 15 feet above the stove to create proper draft and no blow back from wind. Th common rule is 2 feet above the peak of the roof unless its greater than 10 feet away from the peak of the roof. Mine is currently on an addition to the house so 3 feet is fine and I got 20 feet height from the stove.
When I relocate the new stove close to the side wall, it will vent through the wall, so a different setup is needed, and I will have an open floor. The barrel will then go into the basement to heat the lower areas. The stove heated the whole house comfortably today, tore out some more walls and the heat just rose right up to the second level ( see pictures )
I had a clean burn, no smoke, so no creasote will build up as well.