Radiation for pain management? Oh, no! It's for zapping malignancies with gamma rays, and has its own unpleasant side effects!
As long as your father's doctors are proposing treatments, and he's going through with it, he's not hospice material.
Who knows? Some people rise up from their "deathbeds" and go into remission and live ten more years; some people go on a talk show looking perfectly fine and then die in two weeks.
It's very hard on caregivers, especially if there are a bunch of you with different outlooks. I'm going through this with my brother, mother, the other sibs and his daughter and granddaughter.
It's a b*tch, isn't it?