Also you need to clear the top most roof by 3' for draw within so many feet of the cap.
Extra Support 0.
Duraplus would be the product to use in that case.
But a brick flu isn't cheap either.
Without seing it you might be able to use like 8 feet of triple or double then the lower just straight stove pipe.
Creosote can be a safety hazard.
Logged Think like a farmer.
The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
If that concerns you just shut down the stove and rod it out peridically some warmer day but I doubt in one winter it would be a problem.
Easy enough to build in a clean out.