Está bien jugar check/call en river vs un float del 50% del bote vs un desconocido, con TPTK cuando se completa el flush draw en turn y en river sale una blank?

PokerStars - $0.05 NL - Holdem - 7 players
Hand converted by PokerTracker 4

UTG: 113.2 BB (VPIP: 13.83, PFR: 12.77, 3Bet Preflop: 4.00, Hands: 96)
UTG+1: 65.6 BB (VPIP: 27.52, PFR: 9.17, 3Bet Preflop: 3.85, Hands: 111)
Hero (MP): 100 BB
CO: 102 BB (VPIP: 100.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 1)
BTN: 135.4 BB (VPIP: 14.56, PFR: 12.62, 3Bet Preflop: 9.52, Hands: 104)
SB: 100 BB 124.4 BB (VPIP: 14.11, PFR: 12.88, 3Bet Preflop: 4.00, Hands: 334)
BB: 111.2 BB (VPIP: 14.75, PFR: 11.48, 3Bet Preflop: 7.61, Hands: 249)

Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has A:heart: K:heart:

fold, fold, Hero raises to 4 BB, fold, CO calls 4 BB

Flop: (9,5 BB, 2 players) 8:diamond: 2:spade: K:diamond:
Hero bets 7,13 BB, CO calls 7,13 BB

Turn: (23,75 BB, 2 players) 4:diamond:
Hero bets 15,44 BB, CO calls 15,44 BB

River: (54,63 BB, 2 players) 6:club:
Hero checks, CO bets 27,31 BB, Hero calls 27,31 BB