Good day Sycamore,
I have almost the same exact symptoms as you are, but mine is rapid growth, so had to act on it. I get a slight pain behind the ear by the jaw (there is a pressure point there - feels like someone pushing on it). I do have some hearing, but just had proton therapy and right now the hearing is very diminished, assuming some swelling. But the Doctor did say that in a few weeks I should get back to where I was before the radiation and hold there. Not 100% sure on that, we will see.
Like you I was not comfortable with the surgery. You get 100% lose of hearing with the surgery! I am just day one post radiation, slight light headed, but not bad. Feels like a slight buzz, so not comfortable driving while it settles.
It is always hard trying to figure out which way to go. I wish you luck on your journey and what you decide. Keep us posted.