[John Ho]

You don't need a tell here. It's obviously a straight flush against any normal player.

So the point of the original post was how do you maximize value here against a very good player.

I would have checkraised him a huge overbet on the turn representing a bluff. Then I can safely move in on the river and make him think hard rather than put in multiple raises and give away the hand.

Of course if you do it this way you'll only get paid off by a K hearts or a full house if he can see the river for cheaper.

But still the check raise overbet on the turn sounds right.