[@Cleveraptor] From the [url=https://2e.aonprd.com/Ancestries.aspx?ID=59]Archive of Nethys[/url]:

[quote]Dwarves typically reach physical adulthood around the age of 25, though their traditionalist culture places more value on completing coming-of-age ceremonies unique to each clan than reaching a certain age. A typical dwarf can live to around 350 years old.[/quote]

My guess with 25 being "physical adulthood," that maybe 30ish might be where you're aiming? Maybe 40ish? Go with your gut.