Super Bowl meal for 25?

A friend has asked I cook for the game. He expects 25 ppl (all guys at this point). Need feedback on amount of food.

9 racks of ribs (STL trimmed)
2 butts
4 chickens (4-5 lbs each)
Beans/cole slaw

Too much? Not enough?

Thanks.

Jeff
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Buckshot Malone's Pig Shack
www.GodsofSmoke.com
Nashville, Tennessee