Hi Loo Loo, I can see why the consultant thinks it is already in dad's bones - with such a high PSA they sometimes decide not to bother with the biopsy if the scans are very clear. The good news is that the hormones will be starving the cancer already, and that means the tumours will start to shrink very quickly which should get rid of the pain.
There are some amazing new treatment regimes at the minute and statistically, there are good reasons to hope that your dad will be around for many years.