
Oh waggamama, I feel for you!
It was complicated enough 3 years ago (the rabies vacc / RNATT titre test required then), taking two dogs and having a pet export company / (useless!!) vet to assist!
I think you're right to just go with the plans for mating that you already have in place, and see what happens from there.
A friend was taking her 4 dogs with her, and the test for the lepto came back positive on one of the dogs, she had to wait another 2 weeks before re-testing. Although two weeks doesn't seem like a huge amount of time, when it comes to immigrating, it can make a world of difference.
When you're trying to sell a house, pack up a whole household for the shipping company & try and stay sane, it can throw ALL your timings right out of the window!
Best of luck with it all :)
Which Quarantine station will you be using? My two were at Eastern Creek (Sydney).