You ca decide whether you want 2 or 3 to be sweets and the rest savories, for example.

Fr a party this size, this long, for example,you might want
about 8 pounds of meatballs, 2 1/2 quarts sauce, maybe with 6 dozen slider rolls;
same of sausage bites or little smokies;
120 each of 2-3 kinds of little roll up bites;
120 each of about 3 interesting items such as stuffed grape leaves, stuffed mushrooms, mini-quiches, crostini, or tarts; OR deviled egg halves (you need only about 72 pieces)
4 pounds crackers or bread bites with 4-5 pounds spreads or dips or cheese OR 5-6 pounds chips with salsas or dips

Either additional spreads, dips or specialties, OR 4 per person of cookies and bars

Reception level coffee, see beverage planning page, which will also help with alcoholic beverages if needed.
6 gallons of punch, lemonade, hot cider, etc.

This should give you a starting point. For example, you know who to ask who can afford the more expensive items and who has more time than money and would be great for deviled eggs. Feel free to write back