#1 I wouldnt 4b pre yet after being 3bet only twice. You´re planning on stacking off if he jams pre? I usually just gay bet flop, I wouldnt expect him to bluff later streets more often that the times he actually is an idiot with AK/AQ

#2 Def jam turn. Any idea on his 3betting habits and postflop aggression? Id guess TT/JJ/JT rather unlikely and if he´s somewhat aggressive anf loaty there´s KdJd, 79, 78, QdJd, AdJd, Jd9d and so on which all picked up extra equity and might go beserk now. Not sure about river, Id prob check this behind.