The Minskoff has the 5th largest capacity of the theatres on Broadway, I believe. It's large in comparison with most other Broadway houses, but may be small compared to cavernous touring venues (which I'm not sure if you're used to or not). Basically, everything you asked is very subjective. I have sat in the last row at the Minskoff before, and been fine with the experience. I have been at the Minskoff in the last row with people who WERE disatisfied with the seats, and thought it would've been worth the money to get better ones. Here is the seating chart:
There's really nothing that anyone can tell you though. You already have the seats, so go and enjoy.
[title of show] on Broadway. it's time. believe.