@crosshair17 check this https://www.border.gov.au/Trav/Visa-1/887-
I think it would make sense na primary applicant tlaga yung mag satisfy ng conditions. But honestly I'm not sure, maybe it's possible by the time you apply for 887, you can be your spouse's dependent. Ito lang naman yung condition sa 887:
The requirements include having:
lived in a regional Australia/low population growth metropolitan area for at least two years if you were nominated by a state or territory government
lived in a designated area of Australia for at least two years if you were sponsored by an eligible relative
worked full time (usually at least 35 hours a week) in a specified regional area for at least a year while you held your eligible visa
"
You can include the following people in your visa application at the time of lodgement:
your partner (married or de facto)
your or your partner’s dependent children
other dependent relatives.
These family members must meet the requirements for including family members in your application. The application must include documentary evidence of their relationship to you.
They must hold one of the following visas:
Skilled Regional (Provisional) visa (subclass 489)
"
as per requirements, dependents should have visa 489, which actually you would also have as the primary applicant for 489.
Goodluck.