We just did a party for 130, and served chicken & ribs, BB & coleslaw. We did 1 leg/thigh, and 2 rib bones per person. So we used 130 leg/thigh pieces, & 26 racks of ribs. Quantities were just right, hardest part for us was getting everything cooked and done at the same time to feed the folks when serving started. We did it though. Each person got 1 piece of chicken & 2 ribs, no substitutions (like can I have 4 ribs instead of the chicken) hated to be the food police, but thats what the customer wanted. It there was food left after everyone was fed, then folks could come back for whatever they wanted.