Pasta, 10 pounds dry per 100

After searching your site this is what I have figured for a party starting at 3 - whenever. Please let me know if I am completely out of my mind. I am known for having a lot of food at my parties so people will be expecting to eat.

Cocktail shrimp - 8 lbs
Chicken salad 4 gallons
Fried chicken - 100 pcs - legs mostly
2 sheet pizzas
Jo-jo potato's
Croissants for chicken salad and meat sandwiches 130
Pasta salad 10 lbs
Deli Meat tray - 14 lbs ham & turkey sliced
Cheese tray - cubes 7 lbs
Crackers 6 lbs
Buffalo chicken dip - 3 8x8 qrt casserole dishes
veggie tray - 480 pcs
ambrosia salad 3 gallons
ranch Cole slaw 3.5 gallons
pulled pork 5 lbs
2 11x17 veggie pizzas
macaroni & cheese 11 x 17 - 2 trays
sweet & sour meatballs 400 meatballs
macaroni salad 3 gallons

Plus cookie bar

canned pop
punch - 5 gallons
pony keg

First, deep breaths. You are doing fine.

I would tweak a little. Even if you have 80 heavy eaters, you do not need more than enough for 100.

Cocktail shrimp - 8 lbs- people are very greedy for shrimp. Either allow 10-12 pounds plus 3 quarts cocktail sauce, or turn it into a shrimp dip or mold of some kind to stretch it.
sweet & sour meatballs 400 meatballs- about 10 pounds, 3 quarts sauce
Cheese tray - cubes 7 lbs- plenty, but consider doing just 5 pounds and adding sliced cheese to the sandwich makings, for any vegetarians in the crowd.
Crackers 6 lbs fine, some left
Buffalo chicken dip - 3 8x8 qrt casserole dishes
you want at least 6 quarts of dips, so add another 3 quarts of something else here
6-7 pounds chips. Consider doing in crock pots, you have a lot of oven food on this menu.
veggie tray - 480 pcs-plenty, add Ranch dip, see the veggie tray page for amounts. You could do fruit trays instead, very popular.

Fried chicken - 100 pcs - legs mostly- fine

Jo-jo potato's- about 30 pounds. If making at home, consider oven wedge alternative instead of fried
macaroni & cheese 11 x 17 - 2 trays- about 40 servings, none left

Deli Meat tray - 14 lbs ham & turkey sliced-OK
Chicken salad 4 gallons- 3 plenty!
pulled pork 5 lbs- OK if ready to eat weight
Croissants for chicken salad and meat sandwiches 130
Need 5-6 dozen buns for pork, couple loaves good rye or wheat bread
Need fixin's, onions, pickles, etc; see the sandwich planning page
Consider adding 4-5 pounds assorted sliced sandwich cheeses

Pasta salad 10 lbs
macaroni salad 3 gallons
Total 6 pounds dry weight pasta, split according to your estimate

ambrosia salad 3 gallons- plenty
ranch Cole slaw 3.5 gallons- 2 1/2 plenty

2 sheet pizzas
2 11x17 veggie pizzas
Are these two separate dishes? Anyway, plenty even if just veggie

Plus cookie bar- about 4 smallish bars or cookies per person

canned pop- exact info on beverage planning page for soda amounts and types, and ice
punch - 5 gallons
pony keg a quarter keg, about 40 glasses; not a lot for a beer drinking crowd. A full keg (160 glasses) or 2 halves different brews, is usual for 40-50 serious beer drinkers