27T: Call river shove on possible straight board?

[TruFloridaGator]

Block river or set up bluff & call or c/fold?

PokerStars Tournament, Big Blind is t30 (8 handed) Converter on pregopoker.com

UTG (t1465)
UTG+1 (t1500)
MP1 (t3170)
MP2 (t1010)
CO (t1425)
Button (t1765)
SB (t1655)
Hero (t1510)

Preflop: Hero is in BB with 7[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/heart.gif[/img]
<font color="gray">UTG folds</font>, <font color="gray">UTG+1 folds</font>, MP1 calls t30, MP2 calls t30, <font color="gray">CO folds</font>, <font color="gray">Button folds</font>, SB calls t15, Hero checks

Flop: (t120) Q[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/spade.gif[/img] (4 players)
SB checks, <font color="red">Hero bets t100</font>, <font color="gray">MP1 folds</font>, MP2 calls t100, <font color="gray">SB folds</font>

Turn: (t320) 6[img]/images/graemlins/heart.gif[/img] (2 players)
<font color="red">Hero bets t285</font>, MP2 calls t285

River: (t890) 4[img]/images/graemlins/diamond.gif[/img] (2 players)
Hero checks, <font color="red">MP2 bets t595 (All-in)</font>, Hero ?