OK , I need lots of help. I have never cooked a Boston Butt in any form or fashion. My wife picked up a 7lb buttat the store that she would like for me to cook for her family next weekend. This would be my first overnight cook. Unfortunatley we all have plans for early Saturday morning, which will keep us away from the house till mid-day. SO my question...should I even attempt this cook when I will be gone for the last 5 to 6 hours of the cook? Or should I cook it a day earlier and re-heat on Saturday evening? How long for a seven pound butt..how many people will a 7 lb butt feed?