If the villain is a tag, meaning hes atleast decent at playing this game called texas holdem, then hes never betting this turn without a pair after 3 people called his flop bet including 2 fish. If he has AK/AQ he will check behind, and if he has a pair he will continue to bet. This means that your bluffraise will never work assuming the tag is smart enough not to fold a pair in this spot. So I hate your bluffraise, but if the villain has a history of pushing AK or AQ hands on the turn even after 3 or more call his flop bet, or he is weaktight and will fold pairs to suspicious turn raises than go ahead and try this checkraise, but I highly doubt that the villain plays this way.