Yes, and by default in Australia, that is the case. Custody is different to where they live, and child support factors that in. No concerns there.
I’m sorry, but that’s not the case. In Australia, the default is “equal parental responsibility.” That does NOT translate into equal care time. They are two very different things. This is why you need to see a lawyer, because you don’t actually know a lot of this stuff. Generally, the only way in Australia you end up with 50:50 care time is if the woman agrees to it. If she doesn’t (which is very often so she can control money), then the court is very unlikely to order equal care time. The family law court in Australia is very hesitant to order equal time unless the parents are both getting along really well (and if you were getting along very well, you wouldn’t be in court in the first place).
I think your assumption that you will get 50% care time is very naive.
Also, have just re-read your last 10-15 posts. All I can read is ”she she she, her her her”. You are focusing way too much on her, what she thinks, what she says, what she does, what you think she might be thinking. It’s exhausting. Your posts should be all about you. What you are doing, what your GAL activities are, how you’re keeping fit/eating well, how your IC is going, what you’re working on, and what you want to achieve for you in the next week/month/year/5 years.