Hey and belated welcome! Those are some interesting frogs. I think Crucifix toads are a burrowing species? Good luck with your research.
I have litoria caerulia myself and sadly have no more space for other frogs. Mine are the Indonesian type rather than Australian, but I have seen a wildlife watch photo of a caerulia wild in the US on someone's car window. Hopefully they aren't invasive here. Cute as they are, they do have appetites!