My wife and I are throwing a pre-thanksgiving dinner in a few weeks for about 25 people and I have signed up to smoke 2 turkeys. The questions I have are what size turkeys will fit on each level of grates and is it 15 min per pound for the combined weight of the turkeys or do I do it based on one turkey since they will be cooking on separate level/grates and will be the same size? Thanks in advance.