How about a bigggggggg dish of Lasagna? That always goes a long way. You can make it ahead and freeze it then pop it in the microwave or oven.
Or maybe some finger sandwiches and a pot of baked beans.
It's been a long time since I put on a feast for that many.
We're on the road most of the time so we don't really intertain that much.
I've always loved to cook for lot's of people.
I'll look around for some recipes or ideas for you.
I always liek to plan way ahead of time.
You know what, might be a good idead is a pot of meatballs and Italian sausage with small Italian rolls. That always went big with my crew.
Good luck