Looks fine. Your flop semibluff raise is good because you should have decent fold equity on this flop - it is dry, with only one decent draw (which you happen to have, but villain doesn't know that) and villain will often miss this flop (plus villain is oop). If we had a larger sample and villains AF was still only 1 (i.e., low fold equity), calling may be better. However, (very) preliminary reads is that villain is more likely to be a slag/lag with 26/26 and I would go with that rather than the AF on this sample size.
The river raise looks fine. If villain slow played 77, 22 or T7, I'm paying him off - these will mostly be 3betting the flop. 66 is mostly going to fold to the flop raise. T6 and T2 are unlikely to be in the villain's opening range, though we don't have a sense of how often he opens BvB, so they are possible, but not likely. On the other hand, AT-JT are all in villain's raising range here. Villain might fold some of them to a shove (though not likely, he's getting good odds), but you're still getting enough calls to outweigh the occasional slow-played set that boated up OTT.
Looks fine. Your flop semibluff raise is good because you should have decent fold equity on this flop - it is dry, with only one decent draw (which you happen to have, but villain doesn't know that) and villain will often miss this flop (plus villain is oop). If we had a larger sample and villains AF was still only 1 (i.e., low fold equity), calling may be better. However, (very) preliminary reads is that villain is more likely to be a slag/lag with 26/26 and I would go with that rather than the AF on this sample size.
The river raise looks fine. If villain slow played 77, 22 or T7, I'm paying him off - these will mostly be 3betting the flop. 66 is mostly going to fold to the flop raise. T6 and T2 are unlikely to be in the villain's opening range, though we don't have a sense of how often he opens BvB, so they are possible, but not likely. On the other hand, AT-JT are all in villain's raising range here. Villain might fold some of them to a shove (though not likely, he's getting good odds), but you're still getting enough calls to outweigh the occasional slow-played set that boated up OTT.