You can make some cheese logs with cream cheese and small amounts of regular cheese- about 10 pounds would be right for this size crowd- and about 8-10 pounds of really good breads, sliced in baskets.

Skip the frozen veggies- ick- spend the money on fresh fruits (preferably) or veggies. Perhaps a local outlet does some mark down fruits? Or negotiate with some guests to donate a couple of watermelons and make fruit trays with watermelons, grapes, maybe strawberries.