semi bluff line check

Yeah turn looks good to me given your description. If our assumption that he folds overpairs a lot is correct and I think it is given your reads then the math speaks for itself, we get folds enough.

I have a tendency to pounce on what is the most glaring mistake in a hand, here preflop, so if I ignore your turn line, it prolly means that imo there's nothing wrong with it.

pre-flop is pretty bad (looks like something i'd do) and that is the most important thing you can take from this hand.

flop is ok - interested in the range you're doing this with tho
turn is fine as played vs a folder - you're repping exactly 77-99, but it's fine i guess. I think this would be a pretty bad set line vs this villain cos of how often he'll be folding.

rationale for turn bet-sizing bigger isn't ideal