RealisticOptimist, welcome to the forum. Sorry you need to be here, and I'm sure you'll find as I have that this is a wonderful group of guys. Almost no matter what's going on you'll find someone here that's been in a similar situation. Ask lots of questions, we like to help!
The upgrade to G9 is a significant development. It sounds like you have definite plans to follow up, which is quite prudent. Our forum member Peter DisAbelard had a similar surgical experience, upgrading at pathology to a G9.
I've added you to the G9 Crew roster. It's a thread I started so those of us with this high risk diagnosis can share for support. There are links to the initial posts of many others with similar diagnoses.The Gleason 9 Crew -- Part 2, continued.
All the best to you as you work through the next steps. Nothing with this disease is clear, simple, or sure.