About 75 players left here out of around 1200 that started. First place is over $100k. I have 20bbs with 120k at Level 6k/3k with 1k ante. I just doubled up 2-3 hands before after being card dead and grinding low for awhile.

Villain- Has about 40bbs with 240k, he's been opening a lot and has 3-bet a handful of opens as well. He's playing well all around, not afraid to see flops with other big stacks and is applying pressure to shorties. I jammed on his open once before today with about 15bbs when i was in BB and he opened MP. Biggest stack at the table was about 350k.

Villain opens to 13k in MP, folds to hero in SB with J10cc. Hero??

Some other relevant info: The guy in BB is a huge nit. He's an older guy and keeps showing good hands he's folding when he should be defending or 3-betting/jamming. He has about 170k. For instance one hand it folded to the button who opened 2.5x, I fold sb, and the nit folds and shows A3 suited.

Can I flat J10 suited here? Can I jam? Folding doesn't seem terrible either...

Thanks