Hello I have a known leak with 8<m<15 and I just want to make sure this spot is standard.

Late in day 1 of a $1100 MTT. 20 players remain, 19 advance to day 2. Were all ITM at this point so no seriously ICM implications.

3K/6K/ (6K BB ante)
HJ (500K) tight passive older player capable of a making moves here and there.
CO (140K) Hero. Has been playing very tight since becoming so short stacked, just looking for a spot to get it all in and double up.
But (150K) recently lost a massive pot. Now he’s in fold/shove mode as well and shoved all in 2 hands ago.

Blinds are both TAG

HJ limps. (It’s very possible he’s limping monsters here to trap the 2 short stacks on his left)

Hero looks down at 77.

Snap shove?

Not sure about the rest of this world but if its extremely likely he is trapping I'm gonna fold here. IF he is limp happy Im 100% shoving. I think for more passive players they still have under pairs in their limping range that can spaz out.

Passive players would limp there
- monster to trap short stacks
- hands to limp/fold when short shove (he doesn't want to loose more chips)
and I think it is like 98:2 for the second option. So I'd decide according to
- tells, if there are some
- his limp frequencies: if he'd never limp before, then fold. If you saw him limp at least one time, then I'd prefere shove

I am also older player (45), I am absolutely not passive but not super strong agressive I'd bet in this case monster preflop any time, because you and the second short would be willing to re-steal more often, if there is a bet, than if there is limp.