Honestly im surprised how well thought out the timeline is. His age has been known since forever, and Bonney was a character who's age wasnt ever truly known until now.
We've heard bits of Kuma's history throughout the series (King, Tyrant, RA Member, Shichibukai, Pacifista, etc), and its pretty crazy that even Ace defearing a Shichibukai was alluded to forever ago (he was offered the position), only for Kuma to take it.
Like everything to just fits way too well, and it really makes me believe that Kuma definitely will be tied to the crew crew until the endgame, because very few characters in this series have that level of planning (I.e. Shanks, Jinbe, Blackbeard, etc)
