[Shattered]

That turn makes me vomit a little. It's a great card to bluff with, but that ace hits a huge part of his floating range. I think this is one of the spots where it's okay to be bluffed and just check/fold.

In the absence of an ace, though, I like a turn CRAI; it's so much fun to do that to habitual floaters.

Edit: I think that flop bet sizing is fine as it's a 3-bet pot and you don't need to build a pot to get stacks in by the river. The flop's bone-dry and you don't want to discourage him from floating when the only card you don't like is an ace.