I think you'll find that a lot of people don't support the recent pop-up registries. It used to be just UKC and ADBA, which are still the only legitimate registries for the APBT in my opinion. I give a nod to the AADR as well, but would never buy an AADR-only dog. As for the other hundred or so "registries" which have sprung up in the last dozen years, to be honest, I'd keep my money if I were you. There are plenty of opportunities for unregistered dogs who are spayed/neutered, which is a good thing as it does not encourage the breeding of unregisterable dogs.
JMO. Don't take it as a bash, just trying to be informative. Sorry I don't have a direct answer to your question, but hopefully it all works out for you.