I don't understand.
Is this a job or are you cooking for free (family wedding?).
Are you wanting ideas for more and different food?
How to hold your dishes?
Sounds like a buffet and if so always lead with the least expensive item (pasta) and end with your proteins (doesn't hurt to have one of your peeps dishing out the meats and cheese).
A self serve salad bar (depending on how many items) can be a real money pit , esp if they have been drinking, so supply small plates (no bowls... a lot of damage can be done with a bowl) and look at that food cost very carefully before final contract is signed.
100 people is not many so you need to be on point with all of your costs if you want to end the day in the black.