I actually had Chokebore on my original setlist (with Ghosts, & The Swing of Things), but they got scrapped for time, unfortunately. That's what happens when you're hitting the end of your show and realize you're about to go over into the next time slot. Even worse, since it's our live night and I don't like cutting into the band's time.
As for Metallica, I don't think I'll get around to them on account of the fact that I have a new outlet for metal with the new show. They would definitely be great for that, though.