I think ziti, bread, and a salad are just fine and you don't need anything else. A meat-less option is awesome. Keep desserts simple, that can be done ahead of time and frozen like brownies or cookies. At a church dinner we served store-bought lemon cake served with a dollop of a lemon sauce, a fresh raspberry and a mint leaf. People really like the beautifully presented dessert. We didn't tell them it wasn't homemade! I think we got 12 servings out of each cake.