just adding a higher CFM fan to a stove will not increase the stove's heat output. The air is forced over the heated surface too fast
to pick up enough heat, so the output air is too cool to be much good for heating..
You might get more heat from the stove if you take a length of dryer vent hose and hang one end from the ceiling, and drop the other end on the floor near the inlet to the stove's blower fan.. This way you are heating the hot air off the ceiling, reheating it, so it gets much hotter.
A ceiling fan will help force the hot air off the ceiling too.
If your stove is off in a corner, or not near where you work, then the radiant heat off the sides and top of the stove are wasted, You can make a
sheet metal enclosure for the stove sides and top and duct this hea tto your workbench area..
Just some ideas