
the only recent (last 15 years) AI litter in my breed used 6 straws resulting in 6 puppies.
I'd certainly want at the very least the whole ejaculate, after all that's what you'd get with a natural mating.
Is there no way you could take the bitch to the dog 9or vice versa?
I know with a large/giant breed Air Transport can be tricky as many Planes can't take the crate size needed.
I have twice used dog abroad, once in Finland and once East Coast USA, and been lucky to get a litter both times.
Depending on where in USA could you perhaps arrange Fresh Express, if you can get the logistics sorted success rates with fresh chilled semen are a lot better.