A belated welcome. Please accept my sympathy for being diagnosed with an Acoustic Neuroma tumor. Not fun. Many of us came to learn we had an AN because our doctor was looking for something else. In my case, he suspected my hearing and taste loss was due to a sinus problem, so he ordered the MRI. It wasn't my sinuses, it was a 4.5 cm Acoustic Neuroma tumor. Apparently, this kind of 'backing into an AN diagnosis' is fairly common.
However, as Bruce correctly stated, your AN is relatively small, allowing you both time and options, so do not allow surgeons to 'push' you into microsurgery, as some will try to do. It's your decision to make, not theirs. Study the information on this website so you can gain knowledge that wiil help you deal with doctors throwing jargon and recommendations at you. Surgery is one option - but for a small tumor, not the only one. Radiation is a tried-and-true approach that you will want to seriously consider, too, although you are not obligated to select radiation, only to consider it. Whatever your ultimate decision, be sure to choose an experienced doctor with many AN patients on his resume, especially if you choose surgery. My neurosurgeon had literally thousands of successful AN surgeries as part of his extensive experience. My radiation oncologist also was very experienced with Acoustic Neuroma tumors and worked closely with my NS. Having AN-knowledgable physicians on your 'team' is imperative for a successful resolution to this medical problem. Do the research, get educated - and don't rush into a decision...but don't avoid dealing with the problem, either.
Acoustic Neuroma tumors only rarely just stop growing (although it does happen) and as they grow, they do damage to important nerves (balance, hearing, etc) that can manifest themselves as 'lifestyle' issues, including permanent hearing loss (one-sided), long-term facial paralysis and other problems you don't want to have to deal with, if they can possibly be avoided.
We wish you well and look forward to hearing from you as you move forward with the decision-making process.