I think this is a spot where you should either bet once or 3 times. Most hands that called flop will be calling on turn but you should have a small amount of FE against stuff like A-highs. By the river you can often get him to fold any mid pairs which should make up a decent chunk of his range. I would expect this to be better than x/f since you'll sometimes be folding with 10 outs against weaker parts of his range and that's not great.

If you're looking for non-fd bluffs on the turn this actually might be the best candidate. Strong TP blockers + semibluff equity seems like a good way to go.

Betting three looks a standard line if you think villain has a fold button.

How do you feel about possibly us not barreling enough turns if we check/fold what is likely two overcards with a gutshot to a lot of villain's range?

Are you bothered about balance in these games? If we only barrel flush draws and Qx it feels like we're not being aggressive enough