should make a good woodworking shop... I have a wood stove in my garage and its located under the house,,, works out good,,, and besides its a good place to get rid of your scrap.... or projects that turned out to be less then ya had hoped they would,,, The walls are insulated and drywalled,,, It had to be fire resistant type since it had connecting walls with the living space, and behind the stove, I have another piece of drywall mounted on blocks that hold it about 1 or more inches from the existing wall for air movment to keep the wall cool,,, works good. I would suggest you put a couple of cheap fans behind, and above the stove, to get the heat circulated quickly around the room,, that will help a lot. And since you have quite a bend in your shop,,, you may need the air flow to push the heat around the corner and keep that end of the shop comfortable.
Fibertech is right,,, follow the codes and use common sense and you will be ok,,, Green wood does produce more Creasote build up in your chimney, so you should moniter the chimney for that,,, chimney fires are a bad thing you do not want to see,, and, besides, you would be disapointed in the amount of heat you would get out of the fire using green wood, anyway,,, if you got it to burn at all.
Wood heat does produce a nice comfortable kind of heat when you get a nice fire going and the heat spread around the shop,.,, but there is a bit of work behind that,,, I have access to a wood supply, so I see it as free heat, if I do not count my labor. and like I said before,,,its a good place to get rid of some scrap and get a bit of use out of that.
It seems like every where I go,,,,,,,,,,,,,,,,,,,,,,,,, there I am...