25+2 still a ways from money, low M spots

[dibbs]

350 started about 100 players left, I still am trying to figure out how long I can let my M get and what spots I can push certain hands in, and what spots I have to call in others.

Hand 1: Blinds 100-200 , I have 2,500, folded to me 4th in with QJo, 8 or 9 handed table, can I push here? Table is normal mix of loose bad and players, most pots have had people shoving or taking it down with a raise.

Hand 2: 100-200 about to be 150-300, I have 2400 in SB with ATo, big stack minraises second in, in general he just limps pots and makes weak bets or calls down, he was raising bigger much earlier in the tourney but hasnt raised in a while. Do you pretty much have to shove this?

Thanks guys.