I can see Brisbane dropping out of the 8 on current form. Haven't looked at their draw though
St George (a), Parra (h), Canterbury (h), Melbourne (a), Roosters (h). +64 differential too so 2 wins should see them into the 8, which you think they'd manage. Might drop a place or two though.
I think everyone down to 6 is probably in, just the last two spots up for grabs from 4 teams (Titans, Panthers, Warriors, Tigers) Tigers lousy differential probably means they need 4 wins to make it though. And given they've got the Cows, Titans, Panthers, Roosters and Raiders, that's a tough ask.
I think realistically it's out of Titans us or Penrith for the last two spots. Hopefully the Sharks hammer the Titans tomorrow to peg their differential back near ours.
The other interesting question is who takes 3rd/4th, I can see the cows dropping out of the 4 if Thurston doesn't play.