Have a 12.5 lb pork butt Im going to smoke/cook on my GMG. I need it done by 3pm on Saturday. Is there safety issues or concerns with smoking it for its 4-6 hrs at 225 the night prior, wrapping it and putting in the fridge overnight and then finishing off Saturday morning for the remainder 4-6 hours at 350? Any other suggestions? I just dont want to wake up at 3am to get it started.