Haha...don't worry mominator; i was only 7 at my first broadway show...and I know plenty of people who's first was the original "Sound of Music" or "Oklahoma." You're not old!!!
I think the minskoff is the biggest cavern of a theatre I've ever seen. I know the Gershwin is bigger, but it doesn't seem like it. I recently saw the Lyceum and liked it very much.
You are young, life has been kind to you. You will learn.
I loved Studio 54 when I saw Cabaret...you can see well even in the back of the mezz (balcony?)..the area where the Emcee waves up to you and calls "Hello poor people!" :) I think it's just the right size there.
The Nederlander is a wonderful theater, I always feel right at home there. Any seat there is good because it's on the small side...my only complaint is the lack of legroom (but the Palace is a much worse offender of that!).