I think it will pretty much be the team that played off in the Preliminary Final with a couple of forced/unforced changes.
I think you're right about that since we didn't have all that many players out with injury in that game, from memory just Talia and perhaps Shaw.
Something that concerns me going forward though is the lack of composure from Petrenko in front of the goal posts. It's something that needs to be addressed or we may end up paying for it dearly in a tight finals game. To be honest given that he is in the forward line primarily in a defensive role I wouldn't care too much if he didn't kick many goals, if he were the sort that made the most of every opportunity he got. I think his biggest problem is when he has to stop and think about what he is doing, as that's where the doubts begin to creep in, when he plays on instinct is when he plays at his best. Personally I would love to see him play on ball for a while, his intensity around the contests and his ability to maneuver with speed and agility in tight spaces is exceptional which would be ideal for winning the ball and getting it out to a team mate.