Hi everyone, thanks for the responses.
I'm really just waiting on news on our visas to see if there are employment restrictions before expressing an interest in writing to get a business visa. In case anyone else is interested in this, I've attached the relevant bit from https://www.business.gov.au/planning/new-businesses/coming-from-oveseas
Thanks for the info on schools; we know what we'll be getting in terms of that so we're happy :)