Anyway, for 200 people, you need 4 people in the kitchen, 12 out front to set up, serve and clean up the buffet and dining area. For 200 people you need 3 lines, or 2 double side lines, to serve. In addition, with the college students, you might plan for 225-250, depending on how many are men.

You need total max about 36 pounds pasta, and this usually splits 2/3 red and 1/3 white, unless there are mostly ladies, when it is more even. A baked pasta, presauced and heated in the oven is the easiest to serve choice- loose, it can get gummy- read the spaghetti page thoroughly.

Caesar salad- use the plan for 100 page

bread-12 pounds per 100, 2-3 pounds butter per 100

Alfredo and Marinara pastas. 20 pounds pasta for marinara, you need about 6 gallons sauce. Alfredo, use the Alfredo style sauce on this site for the 10 pounds pasta. Take a look at this dish for inspiration:
www.adashofsanity.com/2013/12/creamy-pesto-alfredo-chicken-fettuccine-bake/

lemon chicken, about 32 pounds chicken
meatballs, 30 pounds meats
sausage and peppers, 25 pounds sausages equal weight veggies.

Mixed roasted vegetables- 28 pounds ready to cook per 100.
Roasted potatoes, not necessary- you can do some sliced sweet or white potatoes as part of the roasted veg.