The river value bet looks good, i bet $40-$50 here depending and I think this is a time that $50 scares away villian because he just called your turn bet. However, after the turn I am much less in love with the flush/gutshot draw because the board has now paired and I cannot rule out a flopped set from villian but I think a big PP is more likely.

The attempt to draw cheaply is something I really don't work into my game, but I think I may have to give it a try against passive opponents.