I'm about five years younger than you, but there wasn't much happening musically between your 1974 and my 1980 except disco and fusion jazz. Certainly in those days, we thought the Blue Note recordings of the 50s were "ancient traditional jazz". But in the ensuing aeons, I've done a LOT of dance band work which led me back to the 1930s, and even the 20s. I also was fortunate to work in a professional "small big band" all through the Great Swing Dance Scare of the 90s, so I got thoroughly schooled on swing music.
When one realizes that there was a whole world of jazz music BEFORE Diz and Bird started their experiments at Minton's, one can understand a lot better what those guys, and the hard-boppers immediately after, were doing.
My path is a bit different than most players here, as up till about 2010 I was a saxophonist exclusively and it wasn't till then that I took up bass; and I started out as an upright bass player, and that has continued to be my focus. So I already knew how the tunes were supposed to sound, and what I had to do was learn how to make it sound like that. (Of course there is always room for interpretation, but I'm talking about at least can you play XYZ and make it sound like you more or less know what you're doing.) The whole fusion thing, to be quite honest, feels very dated to me, both the tonal qualities of the music and the content. I still listen to it, but I doubt I'll ever play that style again. While Bix's stuff still feels - what would you say, not "modern" - maybe "active". Yeah, you can tell you're playing old tunes, but Bix and Louis and Chick Webb and Red Norvo still feel "relevant(?)" or "meaningful" in a way that 70s fusion doesn't. And guys from later, like Rahsaan Roland Kirk, Arthur Blythe, World Saxophone Quartet, Lester Bowie, Ronald Shannon Jackson, could maybe be crammed into the "fusion" box, some of them, but not really. And they too still feel "relevant/meaningful" to me.
But anyway, if I were launching into a new act of my music career, i.e., standards, on bass, I'd go back to the elders (and I don't mean "elders" like Ron Carter, Jaco, and NHOP; I mean "elders" like Pops Foster, Walter Page, Wilbur Ware, Art Davis, Jimmy Garrison, MIlt Hinton, Israel Crosby, PC, etc., ) I'd work on getting my two-beat playing solid, then move to walking.
Actually, that IS pretty much what I did in learning how to play jazz upright bass, after I had gotten some basic technique together.