chix parm, 200
sausage and peppers, 150
meatballs, sauce, you can do these yourself easily and cheaply. 30 pounds frozen, 9 quarts sauce, heat in the oven covered, allowing 1 1/2 to 2 hours at 350 (middle of dish 165 on a quick read thermometer)

penne, 200
cheesy potatoes, 160

Italian greens, about 150
green beans, about 200 (or other neutral veg- broccoli?)

tossed salad- for 250- you can assempble this yourself from prewashed, ready to serve; see the plan for 100 list, it also has dressing advice.
fruit salad- about 10 gallons

Bread-36-40 pounds, 10 pounds butter, could be on tables.

A party this size takes 3 people in the kitchen and at least a dozen out front to set up. serve and clean up.\