Should I Have Raised More Here?

PokerStars Game #15665031923: Tournament #78457929, $50+$5 Hold'em No Limit - Level III (25/50) - 2008/03/01 - 15:35:59 (ET)
Table '78457929 44' 9-max Seat #3 is the button
Seat 1: suzuki1972 (2225 in chips)
Seat 2: Insomnia4u (3750 in chips)
Seat 3: JazzyJT92 (2345 in chips)
Seat 4: markhamlLUV (3785 in chips)
Seat 5: bfdlad (4800 in chips)
Seat 6: thebottle (9525 in chips)
Seat 7: dtcruiser (3785 in chips)
Seat 8: bullerhund (2615 in chips)
Seat 9: instantallin (4060 in chips)
markhamlLUV: posts small blind 25
bfdlad: posts big blind 50
*** HOLE CARDS ***
Dealt to dtcruiser [Kd Ks]
thebottle: calls 50
dtcruiser: raises 150 to 200
bullerhund: folds
instantallin: folds
suzuki1972: calls 200
Insomnia4u: folds
JazzyJT92: folds
markhamlLUV: calls 175
bfdlad: calls 150
thebottle: calls 150
*** FLOP *** [Jc Ts As]
markhamlLUV: checks
bfdlad: checks
thebottle: checks
dtcruiser: checks
suzuki1972: checks
*** TURN *** [Jc Ts As] [Js]
markhamlLUV: checks
bfdlad: bets 250
thebottle: calls 250
dtcruiser: calls 250
suzuki1972: folds
markhamlLUV: folds
*** RIVER *** [Jc Ts As Js] [3s]
bfdlad: bets 400
thebottle: folds
dtcruiser: raises 600 to 1000
bfdlad: calls 600
*** SHOW DOWN ***
dtcruiser: shows [Kd Ks] (a flush, Ace high)
bfdlad: mucks hand
dtcruiser collected 3750 from pot
*** SUMMARY ***
Total pot 3750 | Rake 0

Did you mean your preflop raise or your raise on the river?

My first thoughts here are that there are a lot of chips at your table.
So that may have a bearing on the size of your raise also.
We don't know how the table has been playing to standard raises.

After your raise you get too many players in the hand and a bad flop.
Not nice.

On the river I'd think it most likely that the opponent is playing 2 pair, a J or a lower flush. How much will he call?

Just my thoughts, but I'm losing a lot at the moment and it's disturbing me

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