Kudos for not falling back on a choice that wasn't obvious for you (ie, Subterranean Homesick Blues or one of the Talkin' Blues pieces) or easier to adapt a straightforward arrangement of.

But Masters of War is an outstanding choice. Great lyrics, and being a folk geek I'm a sucker for the melody, which was taken from an old English traditional called Nottamun Town. And an arrangement like that, shit, man, from the sounds of it, who could ask for more?