Hi Mark; Big Welcome to Permies! And another big welcome to the wonderful world of Rocket science!
I added your post to the rmh forum for you.
Normally we do not recommend placing a RMH in a basement.
A J tube design like your reading about in the builders guide would require feeding every 45 minutes or so.
While it was burning your home would be comfy. At night however , (at below zero) with no fire. Only the basement would gain from the radiant heat.
There are options) To start, in your location I would suggest building a batch box design RMH.
You will not find much info about them in the builders guide.
Here is a link to the best technical information available about them.
http://batchrocket.eu/en/
Here is another link to a batchbox builders forum.
https://donkey32.proboards.com/
We also have info here at permies... I suggest lot's of reading for you... you will be impressed!
A batch box burns even hotter that a traditional J tube and it burns longer as well.
Wood is larger and loaded horizontal.The stove burns wide open. In well insulated homes , batch boxs are generally burned only in the morning and evening.
During your arctic freezes you would burn it more.
With a batch box you have the option of not using a horizontal piped mass, but you can build a vertical brick bell. They can made to fit in any odd areas that your living area has available.
Maybe you might have a spot in your living area where a tall skinny brick bell could be built ?
Extra floor support is generally not needed with a bell.
EDIT) A J tube RMH can be built with a bell also.