I don't like check/jam on turn. Looks too much like a draw. Why would you be willing to allow villain to peel river for free if you have a big hand after he calls flop? It kinda takes AK KK AA JJ out of your range imo. Granted, villain is a fish and probably isn't adjusting your range when you c/r turn, but there's still huge value against his flush draws and we want him to throw away his pairs under the K, which he isn't going to do if we check.