Thank you for all your excellent feedback! It has significantly influenced my next steps. If you have more for me on the transportation question I welcome it.
I want to talk about getting the two existing grafts (and possibly a third graft of a filial) polinated and then letting the seeds finish on Korin as a neutered bonsai, perhaps one whose only branches are female. Keeping them (good choice in pronouns, Korin!) alive over the winter and having the option of cloning in spring if anything remarkable materializes.
I’m a little high but that plan lifts my luggage.