Sorry I know this doesn't really answer your question, but I would:
d. wait until closer to my dates, and keep an eye on TM for the release of other regular price tix and/or resale prices going down
e. your first day here go to the box office and see about any tix they might have for sale while you're here. Especially since you only need one ticket.
f. explore doing the cancellation line, which would use up some of your hours here in NY, but would cost you less money than a resale ticket. How long you'd have to wait on the cancellation line could be better estimated the closer you get to your dates too.
And tbh if you wanted to buy something right now, I would choose front mezz over orch. There really is no bad seat in the house (maybe minus sitting in the rear orch, under the mezz overhang) but having seen it from both orch and mezz my personal preference is that I really LOVED being able to see the full scope of the lights and entire ensemble from the mezz.