Yeah, I kinda lean this way as well. I get the whole release order thing, but in that case you really should go with the PS2/3/Wii U versions since Kiwami was remade partly to pair perfectly with Yakuza 0, so its supposed to be played after, not before. The amount of content and throwbacks to 0 mean experiencing 0 first would give you a greater appreciation for several characters, not least the main badguy in the game.
But hey, that's a minor issue, I hope
Jimnymebob enjoys the series :)
With some of the weird cameos I've seen, at this point I'm not counting anyone out. Though several legit don't make sense so I can't wait to see how certain characters are explained in the game.