Reception after party?

We’re deciding to have our wedding September 29th this year which is a Sunday. We are going to be having it at our home as we want it to feel more on the casual side. I’m still doing the whole dress and ceremony with about 20 people and the “reception” with about 44 people. I cut a lot of people due to budget for catering. Since it’s on a Sunday I figured of having ceremony early around 2pm and then food served around 3pm. Is there a creative way to invite extra people say around 5/6, maybe order pizzas and supply drinks for those extra 30-40 people that I cut to come at 3pm. I need some ideas or some input. We’ll be doing fireworks when it gets dark as well. Also what would I put on an invite ? Or would I just text these people or make a Facebook event? Any input or suggestions are great!