Hi Lauri, welcome from me also. It is a horrid situation to find yourself and your family but very hard for your dad, have you sent for the "toolkit" from this site? You can get it from publications and download or telephone and request one to be sent to you, all of you will find it really useful especially your dad.
Having PCa is not the end of the world and even though it has been diagnosed as incurable but manageable there are many years ahead and as you will see on here there will be others that are still going strong after ten or fifteen years, treatments are constantly changing and it really is a shame that your dad had buried his head in the sand. One thing he or you can do is to speak to the specialist nurse on this site and I am sure they will be able to help or point in the right direction.
Having a positive outlook and not letting this sh***y disease get the better of him is a way forward if he can do it, also reading and understanding the various forms of treatment will help but do not search dr Google just use this site and ask any questions whatsoever as no subject is out of bounds.
There will be others that will give additional help coming along also.
When going to specialists at the hospital try to go with him as a second pair of ears will help digest whatever he is told, take a notepad and pen to jot down relevant info and write down any questions that you may want to ask them, it is so easy to forget at the time.
If you have a Gleason score and staging type it will help others to answer correctly as well.
Best wishes, Chris/Woody
Life seems different upside down, take another viewpoint