Bookster,
Sorry to hear about your dads situation. I am in a very similar position myself having just been diagnosed with advanced PC in late November, with spread to Bones and Lymphs.
My PSA then was 215.
Now not even a full 3 months later, hormone treatment has reduced the PSA down to 0.2 which as you might know means that I am no longer producing the testosterone that the cancer requires to live.
I consider Firmagon (the hormone treatment I had) to be nothing short of a miracle drug and it has given me hope that I can survive for several years with my family.
It has put the fire out and although I understand that the embers of that fire will never totally go out it has given me hope.
I have just started on Enzalutamide tablets as well, and am shortly changing from monthly Firmagon injections to 6 monthly Deceptacyl injections (sp?).
I have hot sweats and occassional bone pain, but other than that I am living my normal life, going to work every day (albeit I am very careful physically).
Although like every human is different, everyone's cancer is different, your Dad might do better than me or might do worse than me, but there is definitely hope for him.