I've cooked a single 8-10lb butt and also two 6-7lb butts on my charcoal grill a number of times without issue. For a cookout this weekend I was hoping to find 2 butts again in the 6-7lb range, but all the local butcher had were 10lb'ers. So my only option was to grab the two 10's...and now I'm concerned about how long they will take to cook. I'd love to know what suggestions any of you have on how I should go about this. We'd like to eat around 5pm, but I will not have the ability to cook them for 12+ hours. My biggest questions are: 1. does it make a difference if I put the 2 butts in the middle of the grill, and the coal split on both sides? Or should I put the butts on one side and coal on the other? 2. can I successfully cook these in about 10 hours? If so, what heat would I need to maintain? Any other thoughts/suggestions would be greatly appreciated.