if there is only 2 side dishes then a 6 ounce serving may be appropriate----and 60--65 pounds would be close.
Potatoes I always figure 1/4 pound potato for each person---but once again---only 2 side dishes may require more.
Sometimes as a caterer I see problems with a customer's vision for a meal. I try to communicate my fears with the customer to insure a good time for all. If the guests are not happy with the meal----it is always the caterer's fault. I see problems with this menu
---ask any female if they think that this menu is ok-----if not maybe try to ask the client if you could add in a salad of some sort---just my observations and probably unwanted opinion