If you want to salvage hearing translab is not the way to go. Actually the reason so many places recommend translab is that's the principle approach they know.
Seriously go to a place that specializes in hearing conservation, such as House Clinic in LA. I believe you may be able to have a middle fossa approach (which is one of the most technical approaches) with your tumor size which has possible hearing conservation. Make a copy of your MRI CD (or get one if you don't have it already) and send it (and any copyes of your hearing test records) by FEDEX to the link at this URL:
http://www.houseearclinic.com/consultation/acousticneuromaYou'll get a free by phone call from a House Doctor and they can tell you what is possible. They will call you about 3-4 days after you FEDEX them your records. They have also done research on indicators for fundal fluid as statistical evidence for hearing conservation using MFA.
Now I traveled from out of town there and while I had surgery, there was three of us from out of town (New York, Tennessee, and Washington). They are set up for this. This would be another recommendation to save your hearing. Additionally, if hearing is lost, House specializes in implants if the audio nerve is not viable. I was in the same boat as you and glad that’s where I went. My hearing was saved although other doctors told me it was not viable. My best to you. Craig