You mean working without the kitchen you’re going to build?
If so - that is tricky.
I scaled my sauce and dough recipes down and made batches at home as small as I could. Then made pizza for the family. We’d eat pizza til exploding, and still I’d chuck gallons of sauce, etc.
Some of this was with products SAMPLED from food vendors (different brands of cheese, etc).
To cook, I used a VERY thick stone in a home oven that I preheated for HOURS, to simulate cooking in a deck. Not the same, of course, but I CAN make a VERY GOOD pizza at home this way.
You still need to plan to do final recipe testing and finalize things after your kitchen is built - this can probably be combined with training key staff (on the processes that you already know are final).
Hope that helps a little…