Re: Best chimey sounding humbuckers!?
Very low wind, unpotted, plenty of scatter. One of the boutique winders could make you one.
Zhangbucker is a member here, and he's the only one I know of nowadays who'll still make actual handwound coils on request. Not hand-fed onto a machine, mind you - literally hand-wound, every wrap done by hand. I have two and they're amazing. Extra airy, could really help bring out the acoustic character in a semihollow.
ReWind is another great winder - specializes in PAF types; James deserves his excellent reputation and his low output neck hums are wonderful. He also offers a rod mag pickup in a humbucker-sized housing, even with dummy pole screws if desired. Not humbucking, but bright and less bark than a P90. Check his website.
In a mechanically wound pickup, the old Gibson Shaw humbuckers are nice and chimey. They average around 7K and the secret sauce was UA5 mags, the first production humbucker to use them AFAIK.
As for more affordable modern options yes, the Jazz is crisp and the Antiquity is quite open sounding. And the 59N can chime nicely if set up right, especially with an A4 or UA5 mag. Any of these would likely be an improvement over the stock Epi humbuckers.
Or for full singlecoil chime, use a real Strat pickup. There are adapter plates to mount one in a humbucker rout, and at the neck you probably wouldn't require a lot of extra height. Again, not humbucking but extra chimey.
Of course, your 339 still won't ever really chime like a Strat, but this would be close as you really could hope to get.