Done this many times....not 54 pizzas but 12 to 14.
Greet your guests and let them know pizzas will be ready shortly. 30 minutes after the party starts I start cooking.
First off, you need a table set up next to your BS with everything oin it. Then you need a helper to dress the pizzas and cut/serve them.
I open and stretch the doughs and bakes the pizzas, 2 peels are very handy for this.
For parties I make larger pies, usually 14" to 15". You make fewer pies and this way your guests are fuller.
14 larger pizzas will feed up to 40 guests and take about an hour to make.
I have done a party with 11" pies, but it feeds less people 14 pies about 28 people and they take just as long to cook.
I have premade pies, dressed them and everything ahead of time and refrigerated them. I put them on parchment paper so they wouldn't stick, but you have to cook them in your home oven. The BS will burn the paper and it will stick to your pies. You also have to brush the crusts with oil so they don't dry out.
I would like to know how others handle parties. Curious to see if this process can be improved.