@StarSong, I know you prep all the pizzas ahead of time. How many ovens do you have for baking them or do you pre-bake and then warm them up just prior to serving. However you do it, I’m sure you’ve got the system down pat.
Maybe more than you want to know but here's the process in detail:
I don't prep them ahead. I make the doughs two days in advance, weigh them out so each will create approx 16" pizzas, and put the doughs in 1 quart containers. (I bought 32 of them at a dollar store a number of years ago - 4 for $1.00.)
The dough does a slow, cold rise in a refrigerator in the garage. I gauge the weather on baking day and start taking the doughs out of the fridge so they'll be nearly room temperature when I'm ready for them. (About 3 hours yesterday. In the summer it's about an hour.) Then the day before the party I make the sauce.
Our kitchen has a quite large peninsula, and I set up a station there with all the topping and other ingredients I'll need. I face our guests so I'm fully engaged in the party while making pizza.
We have two large, thick pizza stones and place one in the middle of the oven, the other on the top rack. Preheat the oven for a full hour so the stones are hot, hot, hot enough that between the oven's heat (it goes to 550°) and the stones' radiant heat, a pizza cooks in 8 minutes (turn every two minutes). DH mans the oven while I make pizzas.
I need about six minutes to stretch a dough to size, dress it, and get it ready for the oven. If I get a little ahead of DH, we shift the pizza that's already in the oven to the top stone, putting the newer one on the lower stone.
Like anything, being organized and having proper tools are keys to success. I use a wooden pizza peel for raw pizza and shake it onto the pizza stone. DH times and removes the pizzas with a metal peel. We have a 20" by 40" cutting board for regular pizzas and an 18" X 24" cutting board where we put special diet pizzas (gluten-free, vegan, etc.).
We've got a great rhythm.
One year I badly burned my hand on a pizza stone fairly early in the party and one of my sons took over the pizza making in my stead. Bless his heart - he's the only one of my kids who wanted to be taught how to make the pizzas. Had he not done that I would have had to power through the pain.
My 10 year old grandson will likely want to learn. He's very interested in the whole pizza process and loves helping me in the kitchen. That said, at PC parties he spends the majority of his time decorating cookies!