All numbers are approximate because the site doesn't save HHs.

$5 BI. 6 left out of a field of almost 400. Prize structure:

1st - $500
2nd - $300
3rd - $200
4th - $140
5th - $120
6th - $100

Blinds are 15k/30k with 2k antes. The field has been playing humorously tight, and I've built my stack without seeing showdown. The exception is the chip leader in the BB, who has tight, aggressive, willing to play for stacks and has seemed to be doing everything exactly correct.

UTG (50k) folds
HJ (500k) folds
CO (50k) folds
BU (285k) has 98o
SB (110k) left to act, has been playing tight and passive; I haven't ever seen him defend light
BB (700k) left to act, is playing a good TAG game

Seems like a standard shove, but I'm likely a couple hands away from adding 40% to my payout and potentially a couple orbits away from doubling my payout. Against bad players, I like to min-open/fold even though it's super exploitable, but this is the nut-worst spot to try to pull that off. Should I just nit fold?

The stakes and payout are lol, but I wanna get better at tournaments.