Bandidas

In first, i think i just sit out this table... why to play a table full of reg or nit ?
In second, on this kind of table K9s on MP is too loose for open imo.

And the flop, nothing else to do than call. There is not inoff draws and bluff in vilain range for make the jam EV+ imo.
And on the turn :
- if we not hit, i probably just x/f (depend on his bet sizing, that just math)
- if we hit, i think to DB here. He will c/b to often his DP and set imo.

Sorry for my english. I'm french... ^^

Agree with SPrince about the fact we will totally overfolding this spot if we start to fold this hand.
BUT, who care at this stack ? This spot will not come so often and even if... how many V will really exploit you here ?
SO, i think Limp Limpson is right, that a pretty easy fold. Vilain will reaaaaaally underbluffing this spot.

Sorry for my english. I'm french and my english is not so good.

I play like you until the river.
River when V check he GU his bluff for the most part, and some time he can check a set for let you prop bet your miss draw.
So, here I will just c/b everything who bit his bluff and bet everything who don't have showdown equity (so, i bet T8s). I don't have any value range here, because the top of my range will be AA,KK,AQ and i don't have any value to take with those hands (considering V range). Maybe if you want to play tricky you can gay bet those hands river and hope a raise of V with his bluff...(to do when you run good.^^)
For the sizing, i think no reason to make a big bet, something like 2/3pot should be good.

Sorry for my english. I'm french and my english is not so good.