Dan I am a Dr Megerian fan! He did my 16 hour surgery 5 years ago with Dr. Selman and removed all of the AN. Your AN is very small, mine was 4 CM. If you are losing your hearing nerve, you will lose your balance nerve as well, however, the brain is a remarkable thing and the opposite balance nerve quickly compensates...quickly meaning weeks.
As for facial nerve troubles, it depends on the location of your tumor in proximity to the nerve. My AN was stuck to the facial nerve! Dr Megerian spent hours removing the tumor, cell by cell, to preserve my facial nerve. I do have some facial numbness and facial paralysis but people are always telling me they don't notice. (I do however).
I was 34 when I had my surgery AND my dad is a retired phone company man with some pole climbing in his history!
Welcome to our little exclusive club and feel free to pm me anytime!