Big eaters, little eaters? Women and children, more men? How many sides?
I have a sheet I use for cooking for some events I do. If I planned for 90 heads with 120 1/4lb cooked servings (60 of each) I would be at 25lbs raw pork (about 3 butts) and 37.5 lbs of raw whole chickens (about 7.5) figuring 60% yield on the pork and 40% yield on the birds.
Neil -- "Easy Bake Master"
NB Bandera [gone to heaven...conveniently located in Long Island, NY]
Rebel 23, WSM A, WSM B, UDS, Easy Bake Oven
Pork Pistols BBQ
MOINK...It's what's for linner.