We have had wood stoves in 2 other not off grid, previous residences as heaters-those places had no other heat source (both in south Texas-where cold is 50F). Both worked decently well as long as you were in the same room as the stove and because it wasn’t too terribly cold.
Hence the advantage, in this moderately cold environment, of living in one room–a wood stove does just fine as the only heat source!
and have heat painted the outside to cover the rusty spots on the stove. The stove pipe will get the same heat paint treatment.
I’ll post pics when it is reinstalled in the new kitchen!!