Just one more recommendation. I don't like smoking on the clock. All meats differ, then you have to calculate the weathers influence, even if its an electric I think sometimes its slow electricity!
Why put yourself thru the stress? You are probably going to pull it anyway so why wait, cook it a day early, pull it and put in the reefer with a bit of finishing sauce. Then when its time, throw it in a crock pot and heat it up, again adjusting for moisture with finishing sauce. I actually prefer it this way because it gives that sauce a chance to get into the meat. Its like beans, or chili, or gumbo, its better the next day when its reheated.
Other obvious benefits are you are not tired and cranky at the party, you get a good nights sleep. Youre clean, and you can do some of those nice party poppers while waiting to eat so everyone can appreciate your smoking skills as well as get you out from under the bosses foot. Outta sight outta mind! No stress over completion time involved.
Its just a win/win/win situation all over the place.