Gonna post my text here since I thought it useful
I wouldn't 3 bet KKJ5 in this spot due to it being quite a high variance play and reduces the stack to pot ratio post flop which is going to diminish the value of our position.
I'm also giving a bit of consideration to the fact that this is live which in my experience we have to adjust preflop aggression down a notch, I've always seen a lot of commentary from people who said, I was aiming to squeeze and ISO but in reality people are very sticky preflop in live games so it's not as effective a play trying to get that ISO.
Now to the hand strength, KKJ5 is a good hand, whether it's a 3 bettable hand in this spot is another question, if I were to compare it to a Holdem hand it would probably be like KJs or AT, maybe even just QTs but the point is, you probably won't 3 bet those
hands preflop because they are strong enough to play profitable post but not strong enough or weak enough to be putting in a 3 bet, there is more value to just seeing a flop with it.
So with all that rambling, I like the preflop call
Flop is standard, can't really raise obviously and folding to that size is not even an option.
Turn is interesting with it checked around, you mention having some showdown
equity but I actually don't think you have any when you check turn. Their checks mean no one has anything massive but there are a lot of Ax hands in SB and COs ranges that aren't quite strong enough to continue. There is merit to checking and realising equity here but it being PLO there is also a lot to be said about just trying to take down the pot, there are a lot of straight possibilities out there and anything from a 4 to K can reasonably give someone a straight ( discounted the 2/3 but it's still a possibility) which has equity on the turn but can't call. So we gain by taking down the pot a lot without much hassle and we also gain by disguising our draw and have an increased likelihood of getting paid on rivers. It will suck if someone raises us but I honestly think it's very unlikely how the hand has been played thus far. SB sets raise the flop and CO doesn't check them on the turn, all which makes me thinking betting is going to be very successful here.
On the river the call is pretty sick, I like the logic, his river bet doesn't make sense at all, I would have preferred we didn't have the flush draw but so be it. His most likely had is a 3 card rundown type hand with a T but we have KKJ which diminishes the amount of those hands he could have so he's stuck with a range of like TJ9x or something like that.
PS that's a good moment to show the hand confidently and let people think your unbluffable
