Apps:
40 lbs cheese, prob too much. About 24 pounds and add
3 gallons of hummus or other interesting dips and spreads plus pita chips or 15 pounds veggies for dipping, .
40 lbs fruit, plenty. About 7 quarts fruit dip
12 pounds multiple crackers. If you do a cream cheese block with jam topping for part of the cheese, ginger snaps, lemon snaps and animal crackers are options for some of the crackers.

30 lbs salad ingredients, OK
4 gal of dressing- only 2 gallons

60 lbs bone in ham- this is about 80 servings. 45 would likely be closer.
100 lbs of chicken that will be breaded for chicken parm
This is a lot of meat. I would do 4 ounce pieces and do about 80 pounds of chicken. You will have meat left over

40 lbs -20
10 gals sauce- 1 quart per pound= 5 gallons. Make sure some is meatless as a vegetarian entree choice

60 lbs of potatoes to be made into scalloped plenty with the pasta prob some left. Send me some, I LOVE scalloped potatoes.

30 lbs veg (green beans/corn) at least 40, would do 44

40 baguetteS - OK, 4 pounds butter or 4 pints dipping oil. You can put the bread and salad on the tables to help while everyone waits for the buffet. With 200, do 3 serving lines or 2 double-sided serving lines.