I am not sure if there is anyone here you can really help you as applying for Australian visa is a murky area where you are better off making inquiries in an Australian migration forum. The spouse/partner visa in relation to you being married to a Kiwi may not entitle you to work so you need to check those details in case I am correct.
In the end, it may be a better idea to apply for PR to Australia if you do intend to live, work there permanently (your NZ PR is still intact), as being an Australian PR would entitle you to more privileges and benefits than being a NZ citizen despite Kiwis having the benefit of entry and access to live and work in Australian unfettered.
There are many NZ citizens living, working in Australia which have no means to apply for PR because of their lack of skills, education level etc despite living there for years so if you happen to be skilled in a profession where there is a skills shortage that Australia needs, you may have an advantage over them.