I know its hard for you that your Dad mentioned a will. There are probably a hundred things on his mind right now. When my husband was first diagnosed, we decided to fight, but we also decided to get the "what ifs" taken care (will, power of attorney for medical, funeral discussions, etc.)...why or why do we wait until someone is sick, it would be so much easier to have these discussion when we are well.
While it was very difficult (we got through it with lots of tears and hugs), tackling the "what ifs" up front allowed us to then focus on beating this horrid disease.
Prayers that you find a good doctor for your Dad in Atlanta.
Mary