I have been volunteered to do pulled pork for a church event next sunday. So now I have 30 lbs of pork butt in the fridge thawing out got it at a good price from restaurant depot 1.59 a lb.Now my question to you is all 4 butts at once or should I do two separate cooking sessions. I have a 18" weber bullit I think I can fit all the butts on it in one cook and I would like to cook all at once. But never having done this amount of meat before just wondering if there would be any drawbacks or problems you might see? Thanks for any input here, anything to put me at ease. Probly at least a 100 people coming next Sunday. I want my pulled pork top notch for this!