yep, basically what Amok said..
There's a lot of different Scenario's -- particularly since it's an MTT rather than Cash so aside from position, and player tendencies, we need to consider ours and others stack depths, ICM (are we in the money/close too it/pay jumps, etc), do we have initiative/RFI, etc?
This might be helpful (3 part Phil Galfond end game PLO8 Series)for some of those spots, although, as I mention in comments I'm still not positive why he chooses to limp flat w/AA68 -- I like the limp with the particular stack sizes and bubble pressure, but I'm virtually always reshoving here once we are raised.
https://www.youtube.com/watch?v=OmMysDuGCj8