Hi KC2,
I understand your concerns and I think most of us have at least some anxiety about the risk of facial nerve damage. Although there is no "sure" guarantee that you won't have some sort of facial weakness, your best chance is to find a surgical team that does a LOT of acoustic neuroma surgeries. When I was going through this process, I was looking for a team of surgeons that a) had worked together for at least 2 years, and b) who did at LEAST 50 of these surgeries a year. By the way, those numbers aren't based on anything other than my personal choice.
Because your tumor size seems to be fairly small, I wonder if you've considered gamma or cyber knife radiation? There seems to be less risk to the facial nerve with radiation, although others on this forum can probably comment on that more specifically than I am able to.
Hope this helps, and best of luck!
Debbi