wood burning question

That small a space, no way I would put a wood burner in it, especially with kids.
Sooner or later it will start leaking, and you could potentially use up the air in the cabin.
Keep the electric heat, and build a fire pit outside to entertain the kids, nothing like making them cook their own hot dogs and smores over an open fire for dinner.
Or be super dad and make them breakfast over the fire pit with cast iron, sausage, eggs and hash browns all mixed together makes a turbo breakfast over a open fire.