I am sorry you find yourself here, especially at this time of year, but welcome to the Forum.
I found it full of good advice and support since I was diagnosed earlier this year with similar Grades to you, Gleason 4+3=7, with a PSA of 9.6, bi-lateral.
Were you given a PSA result, if so it might be useful to post it here as all info helps.
I was given Hormone Therapy, HT, and Radiotherapy, RT, but many seem to be offered Radical Prostatectomy, which I sometimes think I would have preferred.
I’m sure someone who had RP will be along shortly to post on that treatment.
I had an HT implant, Zoladex, in my waist. These last for 3 months and are to reduce the size of the cancers and lower the PSA prior to treatment.
I had 2 over 6 months and started RT about halfway through. For RT I was given 20 sessions at a high dose, some are offered 37 sessions, I think this might be age related, I’m 61.
I had a bone scan and liver ultrasound as I had symptoms in these areas but was found to be clear.
It’s an awful time of year to be diagnosed. I found getting as much information as possible useful to keep occupied so I did not get anxious.
The ‘toolkit’ that Lyn mentions is excellent source of information.
Best wishes, G