I would be inclined to go this way... As per @Rod regarding interim orders...
I think your bigger problem may be around not satisfying pre action procedures..... Are you aware that new rules came into affect on September 1 this year?
See here >>> https://www.legislation.gov.au/Details/F2021L01197 Part 4.1 covers pre action requirements... Part 4.04(1)(b) covers consequences for failure to comply... the court may stay the application, on its own initiative or on the application of the respondent, until the applicant complies with the pre‑action procedures. That may not be a bad outcome anyway because you may be able to reach an agreement with your ex.
You nee to file a Genuine Steps Certificate with your application... You can seek an exemption at part B (4)...
Also have a read of the updated practice directions >>> Family Law Practice Direction – Financial proceedings | Federal Circuit and Family Court of Australia
As far as property proceedings go, once you have a case filed, you do have the option of filing an 'application in proceedings' to include super if you haven't yet got the required information from her fund
I think I will have been able to satisfy pre-action procedures... I've been trying to follow the FCAFCOA guides as far as what the process is. We've already been through FDRS and got nowhere, I've been negotiating with her lawyer through a couple of letters since January this year, and have effectively made no progress. The lawyer made an offer of settlement earlier this year which I didn't accept at the time as I wanted to see how things played out, but recently I wrote back effectively agreeing to the offer she had previously made (even though the offer was supposed to be valid only for 21 days...), but that's where things have ended as I've been waiting almost a month for a response from her lawyer.
So although we haven't made full and frank disclosure as I assumed we would be able to reach some kind of agreement without the need for it given she'd already made an offer I was prepared to agree with as a last resort. The other reason I'm not too worried about the pre-action procedures is that potentially there are three categories I may be able to argue exception via... 1. There are (old, historic) allegations of family violence in both directions. 2. The application is urgent given it's just a few days until I would need permission from the court to file late. 3. As you point out, there is also the follow that applies: in which a time limitation is close to expiring.
In any case, in the event that the court stays the application, as long as I have effectively lodged the application and have not missed the window of opportunity, I would be happy to further negotiate and ensure fully compliance with the pre-action procedures. Like you say, I don't WANT to go to court, all I'm really trying to achieve by taking it to court (or threatening to, although I will obviously follow through if needed) is to put pressure on my ex to agree to a fair settlement without need for court action.
I've consulted briefly with my solicitor that has been assisting me with the parenting matter, and they haven't gone deep down my property matter rabbit hole as I haven't technically asked for their representation, but they've said that I may be able to feign ignorance of the finer points of law and procedure and receive a bit of leniency as a self-represented litigant, as long as I'm headed in the right general direction. So fingers crossed on that front.
Thanks as always for the helpful links and advice though. I've got the filing paperwork mostly ready to go, except for the details of the final orders sought. I will wait another day or two and see whether a settlement will be agreed to, and if not, I may be back here hoping for last minute advice on the final orders.