Can you guys help with with some rough numbers of how much of everything we'd need, and how much food cost would be?
Hello. Chef Jimmy J posted a good indicator of the amounts needed. Unfortunately I lost all my favorites through an error with Google. PM Chef Jimmy and ask him for a link to that post. REALLY helpful guy. He will get you sorted out. Best advice I can give. Keep Smokin!
You can figure on 1/4 to 1/3 lb of cooked meat per person. I would cook the meat a day ahead then heat and serve on the big day ....
150x.25=37.5 lbs meat
150x.33=49.5 lbs meat
untrimmed butts range from 6 to14 lbs with the norm around 8 lbs so you'll have to see what size butts are at your local grocery and figure the math.