Mac and cheese, 1 pound dry pasta per 8, 1 quart sauce and 1/2-1 pound cheese per cup of pasta. Good recipes on this site for both classic and economy mac and cheese

Salad, use the plan for 100 page, do 1/2

Fruit, use the fruit tray page, plan for 6-8 bites/pieces per person. 1/3 the deluxe tropical tray would be about right.

Suggest you consider adding 1 gallon of an interesting cold dish such as 3 bean salad, Texas caviar, corn/black bean salsa.

Suggest you have about 6 pounds or really good rolls or breads, 1 1/2 pounds butter.