Villain: Semifish tendency 20/10, but only 10 hands (so more or less unknown)
SB: $8.72 (87.2 bb)
BB: $8.03 (80.3 bb)
UTG+1: $5.62 (56.2 bb)
UTG+2: $15.77 (157.7 bb)
MP1: $7.33 (73.3 bb)
MP2: $10.07 (100.7 bb)
Hero (MP3): $10 (100 bb)
CO: $9.18 (91.8 bb)
BTN: $11.71 (117.1 bb)
Preflop: Hero is MP3 with Q♥: K♣:
UTG+1 calls $0.10, 2 folds, MP2 calls $0.10, Hero raises to $0.50, 3 folds, BB calls $0.40, UTG+1 folds, MP2 calls $0.40
Flop: ($1.65) Q♣: 8♦: 4♠: (3 players)
BB checks, MP2 checks, Hero bets $1.20, BB calls $1.20, MP2 calls $1.20
Turn: ($5.25) A♥: (3 players)
BB checks, MP2 checks, Hero checks
River: ($5.25) Q♠: (3 players)
BB checks, MP2 bets $2, Hero raises to $8.30 and is all-in, BB folds, MP2 calls $6.30
His riverstab looks like an A, although slowplay can't be excluded. Against Queens I'm ahead, so I thought shoving looks best. Too optimistic and just calling is better? What do you think?