Hello Patt,
I never had headaches because of my AN. Vertigo was my big issue, and that actually was a benefit. My right side balancing nerve was so bad before the surgery, that my left side started taking over balancing for me...in the long run it was good for me.
My AN was discovered in Dec '09 and my wife and I went through what you are now going through...how will we handle this? I changed my mind frequently, even after I was sure that I had all the answers. We even had me set up for radiation in May '10,(new machine coming in) but here it April '10, and I had the surgery. How did I make my decision? Read, read, read. Ask lots of questions...lots of them! Interview your doctors...you will be hiring one or several of them to treat you. How much do they know about ANs, etc. Make a list about waiting, radiation, and surgery.
Over a period of time you will have a lot of information, and you will know what is best for you. Good luck to you.
James