Here are some suggestions:
Chicken salad sandwiches
Pimento sandwiches
If you cut these tea sandwich style 3-4 , allow 2 sandwiches per 3 people
Pasta salad about 4 pounds dry pasta
Macarons 35-most everyone will wan one!
10 inch cake- only serves about 12
Charcuterie board- see below
Mock champagne punch
Consider adding an unsweetened tea choice for hose who want a non-sugar choice
5 pounds of cheese- plenty
10 pounds of sausage type meats- jus 2 ounces per person- 7-8 pounds
5 pounds of veggies- not usually a big seller- 2 to 3 peces per person
5 pounds of fruit- I would do about 3 bites per person
6 pounds of bread/crackers
1/2 gallon Pickles/olives- go 3?
1 quart in total of jelly spreads/hummus- none left- go a least 1 full quart hummus- it is very popular- and what will they spread i on?
2 pounds of nuts -fine