If they are refundable rates go for it; but beware that Australian
press has been suggesting it will be shut through 2021. FCO recommendation is still no travel ever; so travel insurance claims might be a problem. Given Norwegian and SAS are talking about being grounded through to 2021 that also might put a dent in getting to Oslo.
I have some refundable hotel nights booked over new year in aus, nz and new Caledonia an am just waiting on booking the flight...