I like this a lot. I'll be using this in pre-gig chats/huddleIf you're going to concentrate on anything, concentrate on creating a vibe. Then feed off that vibe, & have a ton of fun. The audience picks up on a band having fun, much more than it picks up on minor errors.
For one thing it's going to be unexpectedly hot. We're having an Indian summer and it's a low-ceilinged, unventilated cellar bar. Will hunt down a fanI don't know what kind of venue you are playing, but you never know how things are gonna change at the gig.