NL10 - Good river for a blocking bet?

[anthb7210p]

Interesting spot. I think a b/f would be best here of about 4. My reasoning is that villan is passive so I don't think he'd be capable of raising missed FD's here only slowplayed FH's or 9's (villan is a donk, he is capable of slowplaying on 2 flush board). C/fing to a PSB and c/cing a 1/2 sized bet kinda sucks b/c villan would be more likely to put out a full sized bet on a bluff, where a 1/2 sized bet looks more like a value bet. Also, checking will lose value from all the hands that will check behind here.