$16 over overcall with 8 high flush?

[Fiasco]

I hit my card but can I really put in the third call with an 8 high flush?

PokerStars Tournament, Big Blind is t30 (9 handed) Converter on pregopoker.com

UTG (t1500)
UTG+1 (t1490)
MP1 (t1660)
MP2 (t2080)
MP3 (t940)
CO (t800)
Button (t1650)
Hero (t1440)
BB (t1940)

Preflop: Hero is in SB with 8 [img]/images/graemlins/heart.gif[/img] 7 [img]/images/graemlins/heart.gif[/img]
UTG folds, UTG+1 calls t30, MP1 folds, MP2 folds, MP3 calls t30, CO calls t30, Button folds, Hero calls t15, BB raises to t60, UTG+1 calls t30, MP3 calls t30, CO calls t30, Hero calls t30

Flop: (t330) A [img]/images/graemlins/heart.gif[/img] 4 [img]/images/graemlins/heart.gif[/img]K [img]/images/graemlins/spade.gif[/img](5 players)
Hero checks, BB bets t150, UTG+1 calls t150, MP3 calls t150, CO calls t150, Hero calls t150

Turn: (t1080) 3 [img]/images/graemlins/heart.gif[/img] (5 players)
Hero checks, BB checks, UTG+1 bets t1280 (All-in), MP3 calls t730 (All-in), CO calls t590 (All-in), Hero ?