Hero (100bb) is SB with AcKc
Opponent (100bb) is BB ( reg 27/24 fold BvB 46 3bet BvB 15 )

4 folds, Hero raises to 3bb, BB calls.

Flop Js 5c 4s (6bb)
Hero bets 4bb, BB calls.

Turn As (14bb)
Hero bets 5bb, BB raises 19bb, Hero calls.

River Ah (52bb)
Hero checks, BB bets 20bb, Hero raises to 74bb and is all-in.

Initial thoughts:
Turn my only size is 1/3, I think AK is still a valuebet, when he raises i'm not sure if it's a good call as i'm probably at the bottom of the value range and i also have better top pair hands with a spade. In theory i should defend >50% and my bluffing range OTT should be a similar % depending on my river sizing on various runouts, thus i call. River I bluff this hand as i think his sets and 2pairs aren't strong enough to raise the turn, and i have a blocker too, so he has mostly flush or bluff. My turn calling range has some sets and 2pairs tho, so i can easily represent them.