Hi Z. I don't have any experience regardin your 3 questions, except that I did take supplements,but my cancer came back anyway.
It sounds like you have an early stage cancer. I had early stage lung cancer twice and had surgery twice. I don't regret having had the surgery. I do regret not doing adjuvant chemo after the first surgery. I did chemo after the second surgery and it was not bad at all. I took a few days off work after each treatment, but probably could have toughed it out and gone to work if I wanted to. I gather you are somewhat adverse to surgery/chemo, and I just wanted to let you know that it was not too horrible for me.
Don M