Too aggressive semi-bluff?

[bluesbassman]

Stars $20 + $2 SnG. I had a tight, solid table image, so I thought the PF raise with my J/images/graemlins/spade.gif T/images/graemlins/spade.gif was reasonable here. I then made a continuation bet on the flop, followed by a second barrel on the turn before shutting it down. This hand is the one which crippled me. Too aggressive?

PokerStars No-Limit Hold'em Tourney, Big Blind is t50 (6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

saw flop|<font color="#C00000">saw showdown</font>

UTG (t4075)
<font color="#C00000">Hero (t1805)</font>
<font color="#C00000">CO (t2660)</font>
Button (t2375)
SB (t1115)
BB (t1470)

Preflop: Hero is MP with J/images/graemlins/spade.gif, T/images/graemlins/spade.gif.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t150</font>, CO calls t150, <font color="#666666">3 folds</font>.

Flop: (t375) 9/images/graemlins/club.gif, 8/images/graemlins/club.gif, 4/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t200</font>, CO calls t200.

Turn: (t775) 5/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t400</font>, CO calls t400.

River: (t1575) 4/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
Hero checks, CO checks.

Final Pot: t1575

Results in white below: <font color="#FFFFFF">
Hero has Js Ts (one pair, fours).
CO has 6s 6c (two pair, sixes and fours).
Outcome: CO wins t1575. </font>

[Freudian]

I would fold preflop. Too small bet to get the desired effect on the flop. When he calls I wouldn't do it again on the turn. I would check and hope for the free card.

Basically we have a hand that (IMO) shouldn't have costed you anything losing you 40% of your stack.

[ripped]

You have a nice sized stack where you dont need to make any moves that can hurt you. Fold this preflop and move on to the next hand.

[Page Jacobson]

There's no way I would have called those three bets from CO's position with pocket 6's. Especially from a guy I read as tight. Maybe the pre flop bet, but when 2 overcards hit and no 6 I'm out of there.

[bruce]

Blinds are too small to be risking your chips for T75. I
would probably fold preflop and if I don't I would bet more
on the flop and if called I'm done.