Strictly my opinion, but radiation and chemotherapy are the worst choices that a person could possibly make. They do not tell you about the significant number of patients that can not complete those therapies. Most of those people actually die much faster than they would have without those treatments, and the sad thing is that they die miserably, not from the cancer but from the damage done by their therapy.
Both radiation are seriously damaging to the entire body and especially to the immune system. In addition, neither of these treatments address the root cause of cancer which is why so many people have recurrences even if they live long enough to be called as cured.
If I had cancer, the most important things that I would consider doing is to fix the immune system and make myself more healthy. Neither radiation nor chemotherapy can do this.