What comes out from the hot air outlet vents on the 50-93 is but a fraction of the total heat...much, much radiant heat is also emitted and still needs to be distributed.
Now, you can move stove DOWN to the basement and put all that radiant heat into that ADDITIONAL SPACE (which was not before heated) some of that radiant heat that isn't soaked into the walls and into the floor may trickle up to the under floor/ceiling.
In other words...You are doubling
the square footage of the space to be heated now and yet your stove is still the same size.
You may be more than doubling the real heat load down there due to poorer insulation and more mass to now try and heat up.
Many folks wish they could move their stoves upstairs and use less coal for the same comfort.
Furnaces work very well downstairs.
If there were a Magic Solution, would not everyone here be already using it?
Maro, Do you want the additional heat downstairs?