Villain is loose/passive as is the table for the most part.

Party Poker No-Limit Hold'em, $ BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

UTG ($35.70)
UTG+1 ($29.20)
MP1 ($4.15)
MP2 ($15.10)
Hero ($25)
Button ($27)
SB ($23.65)
BB ($8.10)

Preflop: Hero is CO with Q, J. Hero posts a blind of $0.25. SB posts a blind of $0.10.
4 folds, Hero (poster) checks, 1 fold, SB (poster) completes, BB checks.

I probably should've raised this coming in;8 handed folded around to me on the CO QJo while not my favorite hand(I'd prefer QJs but anyways) is still ok in position against a weak SB player.I make the call though;SB calls,BB checks.

Flop: ($0.75) K, 8, A (3 players)
SB checks, BB checks, Hero bets $0.6, SB calls $0.60, BB folds.

Granted I only have a gutshot(cause I can't presume my Queen or Jack is live due to the Ace and King on board),but betting will allow me to take some control of the hand;perhaps even take it down there.SB has checked to me in position so I lead out a probe bet of .60 into a .75 pot.SB calls.

Turn: ($1.95) T (2 players)
SB checks

SO I made my hand,SB has checked again.How much to bet in order to entice a call that is +EV long term?