My pizza came out fairly well in the end. I did have to punch down the dough a couple of times, during bulk fermentation.
I want to mention a couple of things I noticed that are a little bit off topic, but I think are worth mentioning. I expected the dough to be significantly different from the usual natural starter dough I make, especially in handling. There was virtually no difference as far as I could tell, aside from smell.
And here's a difference in cooking that I wasn't expecting: when I put the pizza in the oven, the center part (everything but the outer "cornicione" or crust) would puff up into a giant bubble. Lifting an edge would let out the trapped air, deflating the bubble, but only momentarily. In order to let it cook properly I had to poke a hole in it, which would then leak some of the ingredients onto the stone, making a mess. I started stretching the dough less, and adding more toppings, which seemed to solve the bubble problem, but obviously steared the pizza away from true neapolitan. I am baffled as to why using IDY over a natural starter would cause that problem. Maybe somebody here can shed some light? One final difference, which I noticed in cooking, which I was expecting, but not to the extent that I noticed: the dough was not nearly as burn resistant as the same formulation with natural starter. In fact, on several occasions, the pizze actually caught fire! And even more often, the bottom of the pizza would burn. To solve that, I had to let the oven temp drop a bit. Which of course veered the pizza away from neapolitan again.
Finally, the finished product: It was obviously not as flavorful, but it was also a little gummy and somehow heavier (digestion-wise).
I'm making it sound like it was horrible, but it was in fact very good pizza, but not nearly as good as my usual dough. I have some relatives here from Italy (about 1 hour away from naples) and they loved it. They told me that even most pizzerie in Naples don't make it that well. That said, they definitely were not my best pizze.
I hope that helps someone, someday.