Newly diagnosed meningioma - where to go from here?

I am a 73 years old female in good health and just received a diagnosis of a 4cm meningeoma in the right cerebellopontine angle posterior to the IAC and porous acoustics. The report indicates a mass effect on the right cerebellum and pons with minimal edema in right cerebellum. This was found because of an accident I had, so purely incidental. I have no symptoms. The neurosurgeon is suggesting another MRI in 6 months to see if it has grown, then yearly. I am in agreement with this for now. My concern is if, in waiting, my health deteriorates and surgery becomes much riskier when I eventually need it. This is all so new to me it is hard to understand. Should I get a second opinion? Should I just sit back and wait like I don't know I have it? Im looking for some support from anyone knowledgable.