Gary, as Chris and Lyn have pointed out, your description above is a bit confusing.
But, let's assume you do have G4+4.
I was diagnosed at 46. My gleason score was 4+5.
To cut a long story short, almost 6 years later, I'm still here. I've recently been discharged from oncology. I have every reason to believe I'll be around for a long yet.
There are several of us on here who were Gleason 9 and we are still here.
I don't want to minimise your worries, and some men have of course lost their battle, but you have every reason to hope.