Welcome to Healing Well TeamChris!
As you can see already, you are not alone any more. As Almost A 10 has showed, he started out at a PSA of 240 and he is a Gleason 9 also and he is coming along fine so far. We have many men here that had very high PSA's that are improving every day.
It sounds like you doctor is on the right track so have trust and faith.
We are here 24/7 so ask any questions you have, someone will probably have an answer or encouraging words for you.
Bill from Florida