You don't seriously think you can swing a timpani around, do you? The things come on wheels for a reason. They can be lifted, sure, but at their bulk, swinging is out of the question. Maybe tossing into some dude like a River City Ransom trash can (without the pre-emptive hoisting over the head.) I'd rather use the timpani for making LOUD NOISES, or maybe hit my foes with the mallets.
Also one of your write-ups you cut off in the middle and you have no #12. Did you leave one out or is that just a typo?