Hello! IR1 case here. We were DQ'd on Dec 5, 2022 and are still awaiting an interview date. A guy in the thread above said he was DQ'd in mid-October 2022 and heard about his interview date in early Feb 2023. The interviews appear to be taking place about 5 weeks after you hear from them about it. We estimate we'll have our interview at the earliest in April and latest in May so since you're about 2 months behind this timeline you can likely expect June or July for an interview date.
If you're not in it already, join the K-1 and CR-1 VISA Process for Aussies group on Facebook. He also gave me this tip and it's been very helpful in trying to suss out when you might be hearing about your interview date.
And I have no clue about the priority date but what you suggested sounds right. Hope this helps!