I think you shove here. AK is a lot more likely than something like
and it's tough for him to have a higher flush beyond that. At this point I'd say it's pretty likely that he puts you on AA, QQ, JJ, something like that. If he's betting as a bluff, then shove is better as he won't get to see what you reraised him with. If he's betting for value, again, back to AK. And I doubt he folds AK. He'd probably rethink things and wonder if you reraised him with something like that
but then he'll probably convince himself that you're just chopping and he has to call If you shove and are beat here, then shit happens, but it's the correct play.
Lee