JJ in MP with blinds 75/150

[mmbapmashida]

No read on players, but table has been pretty tight with at least 1 raise every hand or almost every hand. My questions are, how should I have played the flop / turn differently?

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (8 handed) converter

BB (t12436)
UTG (t11674)
UTG+1 (t2840)
MP1 (t12721)
Hero (t3138)
CO (t4867)
Button (t1364)
SB (t3409)

Preflop: Hero is MP2 with J[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t450</font>, <font color="#666666">3 folds</font>, BB calls t300.

Flop: (t975) 8[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets t300</font>, <font color="#CC3333">Hero raises to t900</font>, BB calls t600.

Turn: (t2775) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets t600</font>, <font color="#CC3333">Hero raises to t1788</font>, BB calls t1188.

River: (t6351) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: t6351

[adanthar]

I think it's standard until the turn but when the ace hits and he bets out again, unfortunately, you usually have to fold here. What's the buyin?