I have been granted another PR visas and I have got the reply from my case officer as following:
1. I (Primary applicant) can paste my visas at New Zealand and My kids and wife (Secondary Applicants) can paste the visas at Guangzhou and they have pasted their visas and I need wait for another month to paste my visa at Auckland.
2. My kids and my wife can arrive Australia before my boarding with new PR visa.
I think the secondary applican can arrive Australia early than primary applicant, however, I would like to suggest you to check with your case officer.
Please also note the date of the primary and secondary applicants of first time of enter the Australia to enable the visas valid.