Assuming all of lynch, Bolton and Prestia are fit, I think most would agree chol and Ross will make way for 2 of the spots. The last spot is the one where people seem to be the most divided but it’s got to come from one of these 7 players who have at one point or another lost their place in the side (other than castagna):
McIntosh
Pickett
Graham
Aarts
Rioli
Castagna
Caddy
Whoever goes out is going to be super unlucky. I would fairly confidently say the first 3 are safe and the last out will be one of the smalls or Caddy. If I had to guess I would say Caddy based on team balance.