AJo

I would most likely check behind the turn and bet the river if villain checks to you.
I don't know if you bet for value or as bluff on the turn with a hand that has some showdown value.
River seems like a reasonable value bet. Off course villains range is capped of hand like trips or missed draws and hands like 88-99. After the raise I would expect you are always beat. I can't think of any value hands you beat and a bluff seems unlikely.

Cheers,
SDK1987

if he's aggro reg, turn could be a checkback, as you could get checkraised with bluff.

River- do you think he's capable of turning 8x into bluff? But there aren't much 8x in his bb calling range. i think you have to fold if i think about it

The strategy is preflop 3+1bb per limper when in position postflop, so 5bb is correct.
On the flop cbet 1/3 pot, but check the turn since you don't have a made hand.

On the river the strategy is not to bet, 2 pair on a paired board is not a made hand, but I think it's profitable here to bet and see a fold or weaker hand call.
I would fold to the check/raise. It's very likely you are facing a set or straight, much less likely a bluff.