I would bet the turn, we are ahead of his calling range, and I think hes going to call more hands than he bets. His range for betting is actually going to be fairly strong I think

River im not sure. Hes not going to bet worse for value, he doesnt have much to bluff with, maybe T9s or some busted spades, but its not much. I think he can bet QQ+ for value, tho most people get scared cuz of the 4 straight and tighten up. If hes just going to chk back everything that isnt an 8 then its prolly close, but if hes going to value bet wider than that I think we should be folding here.

I'm more on board with leading flops like this where villain is likely to check back than most flops. I guess if you think he's bad you're thinking he'll likely cbet a lot anyway, in which case I don't think you'd want a leading range as you'll have a ton of hands to x/r him with here. As for what would go into a leading range... FDs, pair+SD make sense, and you'd want some strong value hands as well. I think I would prefer straights as a lead and sets normally as a x/r b/c a good reg's cbet range should be pretty FD-heavy and sets are doing better against FDs than straights, but that's a pretty minor point. Also, we can't be leading every FD here or we'll be unbalanced.

As for the rest of the hand, I could maybe find a fold OTR since this would be a weird line for villain to take as a bluff, but we are probably pretty high up in our own range here.