Quantity wise, you have enough meat. The difficulty you will discover is that when you have both premium (shrimp, ribs) and mundane meats, the premiums run out and people tend to notice what they did not get instead of the nice things they did get. If this is a pot luck, they don't mind so much, but if it is one host, they notice.

I might hold back the ribs entirely, or skip the hot dogs, cut the burgers in half and get enough ribs that there is 1 each. I might serve the shrimps as an appetizer, cold with toothpicks, so people would just take a few. To have a 3 ounce serving for 100 people, you need at least 20 pounds.