if you get called, i still wouldn´t worry about Ax or Qx (most passive players still would raise Ax PF.) at that level, many players can´t fold a flush draw or a straight draw on the turn when they should. what about his raising frequency? is he like a 100% limper or does he have a "normal" raising range for his passivity?     

Putting an opponent on a range, is something that has a big element of guessing. It is not different for the pros then it is for you or me, the different is that they have a better understanding of "range". 95% of the players, could not tell you what cards are included in a 15% range.Villain can hold many hands here. He can have Ax, K9, JT, many flush draws and so on and so forth. You say that villain is not calling your shoves pre very light, so we assume that he is not braindead and has some kind of understanding / strategy. Now you do bet bigger then pot size. What happens now is that you isolate yourself versus a better range.He will not fold an Ace, he will not fold a Queen and he will not fold 99. He might fold JTo tough. But do you want him to fold JTo? On the flop JTo has an OESD, which gives him 8 outs (respectively 6 outs, with you haveing KK). Now with the board pairing on the turn a King does still make him a straight, but does improve YOUR hand to a Full House.So, what do you want: Value? Right. So is isolating yourself versus a better range giving you Value? No it is not.What you wanna do here is to bring the money in. In order to get a worse hand to call, you can bet like 180 (there is a FD and several straight draws, you cannot bet to small) on the turn, odds-call any raise and if he does not put you all in, shove any river. Even with a hand like 88, J9, JJ he might have an odds call on the river.You need good reads to give up your kings here. If he has an Ace.....happens. Open next one and play it exactly the same way.