I'll offer my 2 cents only because I have been in watch and wait for over 1.5 years, but now face a treatment decision because my AN has grown. IF my tumor we not nearing my brain stem, I would opt to W&W a little longer, but now don't feel comfortable doing that. One thing can say is that you have found this valuable forum that could take you weeks to read if you chose to. It has helped me tremendously just understanding what others have gone through, chosen, and how they've done. All treatments have potential side effects but so does W&W if it grows or your symptoms worsen. And, as someone on the forum said, whom I cannot give credit to because I'd never find it again: we are all in W&W whether before or after treatment because follow up MRIs will be necessary even after treatment. But, that's only helpful if W&W in itself worries you. It didn't bother me a bit; I was glad to do it as long as my doc was okay with it. He isn't now, but I'm getting other opinions especially on treatment, which reiterates what others have said: get or find other opinions and doctors that are very experienced treating ANs. You'll find lots of names mentioned on the site.
I'm glad you found the site and I wish I had found it and done more research 6 months ago when I wasn't in a need to do something situation.