Villain is unknown and just sat at the table.
My question is regarding my continuing range here.
I think flop check is fine, as I don't wanna get raised with this particular hand and I will be checking most of my range here.

Turn, I have a flush and straight blockers and my nines and open-ender could still be good.
Is this an OK spot to check-call or I'm overthinking it and I just hope villain is bluffing and will check back river?