I would bet slightly more on the turn. Not sure about an over bet, we are targeting Kx (Which doesn't always work) but because the board is so draw heavy he could still have several missed draws in his range (Again why I prefer betting slightly more on the turn) so we might actually have some showdown equity and not a lot of fold equity.

My preferred line would be bet 3/4PSB on Flop and turn and slightly more than pot the river.

But as played with the smaller bet on the turn I XF river hoping to have some showdown equity against a passive villain.

I definitely think river is a good spot for a bluff vs a reg. There's a ton of better hands which he can fold on this texture. Even if he has 87s he can't be happy calling you down on the end.

As played I think you need to bet more on the turn. This sizing looks a little inconsistent after betting 3/4 pot into 2 other players on the flop. Nothing extreme, but 16bb or thereabouts feels right.

Unfortunately the casual called with 7x, no bluffing after that one.

I can see the point of the inconsistency of bet sizing to, I think that was my indecision shining through!

Thanks guys, much appreciated.

Hand looks fine, would definitely triple barrel here. We have Q-high only and the 4-to-straight gets there. These are typically excellent bluffing cards.