I'm cooking two breast this thanksgiving, one an 11lb and the other a 9lber, I figure I will put the smaller one on the bottom rack. My question is on cook time do I figure 10 minutes per pound for each bird or do I add the weights up, 20lbs and due 10 minutes which would be 200 minutes versus 110 for the biggest breast. I will cook to temp, but I'm trying to get a ballpark time so I know when to start everything else.