Dear Kristin,
My mom diagnosed with CCA is the exact same age and health as your dad, so I really understand what ur going through. She has tried everything now and has been given 6 months max to survive. But I will tell you this from experience, please do not give up on chemo or any other treatment. What may work u never knw and I am definite your dad will tolerate the chemo and subsequent treatments.
Life is too precious and please try everything, I am going to pray that your dad has a long and disease free life.