Good effort, and good info on the set up. I would adjust some of the amounts, as I see some shortages if you plan to serve 250:
Cheese Fountain - Manned station
Cheese Sauce - 3 cans 107 oz each- I would allow 1/4 cup (2 ounces) per person = 5 cans
Tortia Chips - 9 lb- I would allow 8 pounds per 100 people- they usually eat about 1 ounce each
Assorted Brocc, Cali & Carrots - 10 lb- I usually allow about 2 ounces per person = 25-30 pounds
Kids - Tables
Bowls w/ Goldfish, Pretzells & Animal Crackers
Grown ups will snack, also, if they can reach them, about 5 pounds per 100 goldfish and pretzels
Dinner
Salad - 26 lb-OK
Corn - 11 cans (106oz)-cutting it close, I usually allow 12-13
Green Beans W/Bacon - 11 cans (101oz) probably OK
Parsley Buttered Potatoes - 14 cans (105oz) probably OK
Cranberry Sauce- 1 can per 8 people
Butter - 300 ind. pats- very short, allow 2 pats minimum
Rolls - 360 rolls- probably OK if they are large, If small and tasty, 2 per person
Turkey & Gravy - 4 - 22 lb to be deboned- VERY short, allow 1/2 pound whole per person bare minimum
Ham - (not for sand.) 70 lbs- may be over- 60 boneless probably plenty
Drinks
Use the beverage planning page
Iced Tea- have sweet and unsweetened, or all unsweetened
Cherry Limeade
Coffee Reg. & Decaf- use dinner coffee guide in the beverage planning page