I played a 1/1 game today. Very soft game, players are mostly call stations, with some poorly constructed bluffs here and there.

My stack is 450. 5 players limp and I'm on the BB with AJhh. I raise to 10.
MP calls and BTN calls. We're all deepstacked. MP has around 300 and btn has 270.

Pot 36.
Flop A23 rainbow.

I don't think there's point in betting here to I check back, to get value on later streets and under-rep my hand. Action checks behind.

Pot 36.
Turn 7 completes rainbow.
Mp bets 20 and BTN raises to 75.

I tank for a good minute and decided to call. MP is a very ABC predictable player, as stated in previous thread.
BTN is stuck around 800$ in the session, didn't get out of line much. I know he's capable of big moves though. MP calls behind.

Pot 261.
River T. I check, MP checks and BTN shoves for remaining 185.
By this point I feel like I'm beat, my Aj is rarely good here. I fold.

What do you think of this hand? Turn really had me confused, should I flat the 3bet? What about the river shove?

After some comments and discussion I'll post the results.

Just bet the flop/turn against players who don't bluff enough and call too much.

On the turn they're making it easy for you to fold. Despite the fact that you've under-repped your hand people just don't have worse value raises here, there's still a player behind you and you weren't even the initial bettor so you're not getting odds. River is a trivial fold.