Good spot to overbet?

[NLHE lahooozaher]

Opponent is loose/passive. When he bets the turn and calls the raise I am confident he has a worse flush, so is this a good spot to overbet?

Party Poker No-Limit Hold'em, $ BB (10 handed) FTR converter on zerodivide.cx

MP3 ($220.70)
CO ($134.25)
Hero ($215.15)
SB ($129.35)
BB ($306.70)
UTG ($126.90)
UTG+1 ($200)
UTG+2 ($221.40)
MP1 ($147.20)
MP2 ($254.20)

Preflop: Hero is Button with K, 2. SB posts a blind of $1.
2 folds, UTG+2 calls $2, 1 fold, MP2 calls $2, 2 folds, Hero calls $2, SB (poster) completes, BB checks.

Flop: ($10) 5, 8, A (5 players)
SB checks, BB checks, UTG+2 bets $5, MP2 calls $5, Hero calls $5, SB folds, BB folds.

Turn: ($25) 4 (3 players)
UTG+2 checks, MP2 bets $6, Hero raises to $30, UTG+2 folds, MP2 calls $24.

River: ($85) 6 (2 players)
MP2 checks, [color=#CC3333]Hero pushes

[IowaSkinsFan]

ummm wow that one is tough, It depends on reads, I'm positive you have him beat. But if you don't think he can lay down the lower flush to a push, do it. Otheriwse value bet correctly.

[DaNutsInYoEye]

With ~$170 behind the each of you and the pot at $85, I'd probably opt for a value bet instead of a push unless I had a read otherwise.