yeah HH converter doesn't work til you get ten posts. if this is 10NL- then betting the flop or turn is much better spot to bluff here. if villain has shown ability to fold to cbet (nice to keep this stat close by at lower limits), then this is a lovely flop to cbet.

if he has <50% (i'd even say <60%) fold to cbet then a delayed cbet is a great option (in other words bet the turn). i know wtf are we repping because the 2 improves like none of our range, but we're not against a thinking opponent so we don't need to think two steps ahead of him.

as played, i think the EV of bluffing river is marginal depending on postflop stats. a passive player is capable of calling here with a lot of MP, split pair type hands. if you haven't seen villain make a bad river call in any past showdowns then it's worth a shot 'cause the metagame makes up for the marginal EV imo (the pot is microscopic, so it's not a bad spot to get into villain's head that we're capable of bluffing)