I would suggest you encourage them to add a bit more to this menu Here is what I would add:
relish tray- roasted nuts, olives, some marinated or pickled vegetables
Appetizers- mini crab cakes (if VERY broke, could be made with the imitation crab) with a remoulade dipping sauce, a shrimp mold/spread that could be added to the bread, some other bar or cracker.
Since the dinner is so light, it is very important to have a nibble table so the guests aren't standing around with nothing to eat while they wait for dinner. People really notice and remember when there is not enough food...
Have extra cupcakes. People do eat 2 or take some home.
You might like this off-site article:
www.chefrick.com/a-guide-to-great-gumbo/
