50NL, TPTK on shitty flop 5 way

villian is unknown(30/12/2.5 over 30 hands) This hand looks like a live 1/2NL game. I dont know how to adjust my bet sizing on this shitty board. Is c/c or even c/f good given that we are OOP and face 4 callers. This flop hits our opponents range pretty hard. I was surprised that My underbet only got one caller. Should i continue to felt BIG on this safe turn and charge his draws ruthlessly?
No-Limit Hold'em, $0.50 BB (9 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

UTG ($50)
Hero (UTG+1) ($50)
MP1 ($12.70)
MP2 ($11.50)
MP3 ($54.90)
CO ($11.80)
Button ($48.20)
SB ($71)
BB ($39.80)

Preflop: Hero is UTG+1 with A, K
1 fold, Hero bets $2, 2 folds, MP3 calls $2, 1 fold, Button calls $2, SB calls $1.75, BB calls $1.50

Flop: ($10) K, Q, J (5 players)
SB checks, BB checks, Hero bets $4, MP3 calls $4, 3 folds

Turn: ($18) 4 (2 players)
Hero ?