Choose a simple menu
When cooking for larger groups, choose a simple menu that’s still filling. Also consider the fact that you may not have much help or time on the day of. I would suggest things that aren’t too labour intensive or require a lot of ingredients.
Self serve items are best, e.g.. Multiple pastas with multiple sauces, salads, baked meats or fish, pies (macaroni etc.).
Most of those items can be prepared beforehand the night before and will easily stay fresh overnight in your fridge. And you can pop them into the oven and let the magic happen!