Had to chime in since I am a LONG CK AN'er.... just celebrated 14 years post-CK.
BigJoe, sounds like you are doing the proper homework to see what will work best for you. Typically... your size AN is borderline small to medium (I believe medium range starts at 1.5mm.... any over 3cm is deemed large, but again, that is the last time I checked...) and, where your symptoms are there but tolerable, I would continue to peruse the discussion forum for specifics. There is the "Search" option on the home page to see if you can locate specific discussions regarding CK.... re: House Ear Clinic/Keck (Dr. Rick Friedman) and additional wealth of information.
For me, my AN was smaller than yours (1cm). My neurosurgeon did my baseline MRI, then 6 mos later, we did another so we could do "comparison" to see if it was doing anything. In my case, it was. Like you, I did my research here on the forums... and also took advantage of the ANA Peer to Peer talk list (phone/email). For me and my particular situation, CK was offered here in Boston and that is the route I took. For me, it was highly successful (I can say this 14 years later!) and yet, as we all know, "individual results may vary."
Suggestion ... This Sunday, May 3 from 5p-6p EDT, the ANA is hosting an upcoming virtual event, where I will be co-hosting with the ANA and Mark McLaren, who was my mentor in my AN journey. I believe Mark is approximately 20 years post CK.
Participants need to register with the ANA for access to this discussion. It may be worth checking out as you are doing your research and have questions.https://www.anausa.org/programs/support-groups/upcoming-events
Regardless if microsurgical or radiation, know that we are here for you!
Hope to have you join us this Sunday.
All, be well... stay safe!