I've decided to run with an overnight smoke of a 7lb pork butt. I've never done an overnighter, and I'm a bit nervous but we will see how it goes lol.... I'm going to smoke it for about 3-4 hours (hopefully getting to IT of 170) and then stop adding wood and let it roll all night while I sleep. Am I in any danger of overcooking this butt? Can it be easily overcooked? I figure it will end up from 9PM starting, and I am setting my alarm for 7am. Thoughts?