I've decided at the last minute that I want to do some ribs, literally heading to the grocery store to pick some up in a few minutes. Any advice on temperatures? I'll be getting either baby back or spare, not sure what kroger will have today. I'm using a Masterbuilt 40" propane smoker. I'll probably toss in a whole chicken as well, my wife prefers that to ribs. Ideally I would have started yesterday on all of this, but plans for this evening have fallen through and I'm anxious to use my new smoker for something other than jerky and cheese.