So I am going to be trying my first Boston Butt on Saturday morning. I have decided to inject it, rub it an foil it. I know everywhere I read it says 1 1/2 hours per pound, but is that really true. I will be smoking between 235 and 250. I have a group of people coming over and I want to ensure it would be ready by 6pm. I was planning on putting it on the smoker at 6am. Should I leave more time or is that enough