$3s PS: Flopped top set. Slowplay?

[Jigsaws]

CO is a tad aggressive. My notes (only from this session):

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Reraised river with high card K on a board with an A after calling all the way.

Very strong betting with his aces on a one-ace flop. Checked turn, river open push.

Aggressive when checked to for a while.

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Button's just plain bad. A big gambler. My notes:

[ QUOTE ]
Unaware of draws. Maniac calling station etc.?

Pushed river with QQ on a 34667 board.

Got all-in over flop turn river with low top pair, top kicker on a draw heavy board.

Pushed with J5o over a minraise.

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PokerStars Tournament, Big Blind is t100 (8 handed) Converter on pregopoker.com

UTG (t1485)
UTG+1 (t1230)
MP1 (t1505)
MP2 (t2945)
CO (t2905)
Button (t1880)
SB (t1635)
Hero (t1415)

Preflop: Hero is in BB with T[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/diamond.gif[/img]
<font color="gray">UTG folds</font>, <font color="gray">UTG+1 folds</font>, <font color="gray">MP1 folds</font>, MP2 calls t100, <font color="red">CO raises to t200</font>, Button calls t200, <font color="gray">SB folds</font>, Hero calls t100, <font color="gray">MP2 folds</font>

I'm playing for set value here. A minraise call seems fine for the two I'm most likely stacking if I hit.

Flop: (t750) T[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] (3 players)
Hero checks, <font color="red">CO bets t200</font>, Button calls t200, Hero calls t200

I do hit. And on a very dry flop too. Based on reads, either CO or Button is betting here. I check/call, figuring I'll check-raise the turn for a little bit.

Turn: (t1350) K[img]/images/graemlins/spade.gif[/img] (3 players)
Hero checks, <font color="red">CO bets t200</font>, Button calls t200, <font color="red">Hero raises to t500</font>, CO calls t300, Button calls t300

I check-raise for a near min-bet, and I'm fully expecting and wanting callers. I didn't think well about the size of the reraise here, though.

River: (t2850) J[img]/images/graemlins/spade.gif[/img] (3 players)
<font color="red">Hero bets t515 (All-in)</font>, CO calls t515, Button calls t515

I lead, because I could see a check-down after my check-raise.

Any comments on my line?