From this point onwards I'd say Australia will probably need to score around 433 runs (83 + 350) across the 2 innings in 210 overs i.e at 1.75 an over to win. That assumes Eng score 350 in their second innings at 5 an over (70 overs) & no time is lost to weather.
So I really don't think there is any time pressure on Australia unless it's self inflicted.
IMO this is Australia's test to win if they are mentally strong enough to take it.
