I sat in that exact same seat about two weeks ago. It was FINE. Granted, I had seen the show before, so I knew what was going on, but you really only miss some very minor things when the enemble is standing in front of you (cause you are on an angle). I missed Elphaba's "birth" scene and maybe a bit of some other scene because of the ensemble, but that was really it. I think it is worth it to save the money and really see the facial expressions.
"Blow out the candles, Robert, and make a wish. Want something. Want something."
Wishes come true, not free.