Your concoction is on a lot of lists, I see most of those ingredients in lifeExtension's prostate formula and other NIH citations.
Though age is a huge factor in increasing PSA levels, I am nearly 20 years older than you.
Three other supplements that have merit.
Lycopene
Turmeric / Curcumin
Low dose aspirin
I have often seen the first two listed as good for inflammationm I was surprise to see aspirin listed as also good for prostate health.