(Layperson writing)

I'm sorry to hear about your new diagnosis, but welcome to our little community.

I'd handle any advice you get here carefully, because your situation is complicated by your other cancers, even though they're in remission. Your oncology team will be doing a careful balancing act to get you the best outcome for the minimum risk.

Just in general terms, stage 4 oligometastatic prostate cancer (just a few metastases) is very manageable now with a combination of androgen deprivation therapy (ADT), androgen-reception-signal inhibitors (ARSI), targeted radiation, and occasionally even early chemotherapy (mainly if the cancer is already castrate-resistant or has gone past the oligometastatic stage).

Some of these have tough side-effects and conflict with other treatments, though, so your path may be different. In any case, I wish you the very best, and look forward to reading about your progress and your victories.