One more update. I have had frustrations with smoke spillage. I had setup A in the diagram - so effectively I had 3 90° elbows in the system. I have a clean 26' liner, so that was not the problem.
I bought an adjustable elbow connector for my chimney liner, to replace the tee snout connection. , and opened up the block wall where my chimney is, so that I could run a pipe at 45° to the bottom of the chimney liner.
The setup drafts awesome now, and no more smoke spillage! I can rake ashes, shovel ashes out of the stove, etc, and not have spillage into the room. I do need to add a barometric damper now - as I have too much draft when flue temps are over 200°F.
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