TaffyDavenport said: "D 18-20, for sure. You won't miss a thing, and, for your first time in NYC and on Broadway, I think you'll love being closer. I suppose it's a matter of taste, though."
I agree. You don't miss anything sitting off to the side (at least nothing of significance). And the show uses so much haze that none of the effects get spoiled (only one might get spoiled, but you'd have to know how it's done and then look for it specifically).
That said row M is good, too. Especially if one effect remains, as it is harder to see if you're in the front.