Also... looking for fry food cultures like MW, VE, and BBS.
(The Betta breeder on FB, Martias Pham, refused to sell me fish and told me to go find another breeder... instead of that, I'm becoming a breeder like I originally planned. I'm happy I didn't get those PKs... that means I still have money for fry housing and food.)
I'm not sure how well they'll take to it (may need live and wiggling in water) but omegaone has frozen baby brine shrimp- I've used it for my blue eye gertrudea (small rainbow fish) before. check petstore freezer.
Maybe also dig through the betta spawn logs section- see if anyone bred dtpk and contact about a female.