ISO: Wedding Reception for 250 people

My daughter is getting married in August and we are expecting 250 guests. We are having food stations but I'm not sure how much food we will need. I plan to have a fruit/cheese/vegetable display for guests to nibble on until the bride and groom arrives. We would like to have beef carving station; pasta station, ham biscuits, mini crab cakes, mini quiche. I'm not sure if we have enough variety and definitely don't know quantities. The wedding is at 4:00 with cocktail hour from 5:15-6:15 (food stations will open at 6:30). Any ideas? Thanks.