A-K to a 5-8-10(2 hearts) Board?

In a 45 man and this was the beginning of my downfall in the tourney. Mostly everyone at the table had been playing pretty tight and I got AK.

Full Tilt Poker Game #9851573326: $1 + $0.25 Sit & Go (74952891), Table 3 - 40/80 - No Limit Hold'em - 12:13:01 ET - 2009/01/04
Seat 1: Colburn0004 (2,850)
Seat 3: joyful (1,190)
Seat 4: Acesup0459 (2,800)
Seat 5: salkar (1,705)
Seat 6: onice247 (2,725)
Seat 7: kharma (605)
Seat 8: bastoch99 (2,910)
Seat 9: m4rcel084 (2,080)
joyful posts the small blind of 40
Acesup0459 posts the big blind of 80
The button is in seat #1
*** HOLE CARDS ***
Dealt to Colburn0004 [Ad Kc]
salkar folds
onice247 calls 80
kharma folds
bastoch99 calls 80
m4rcel084 calls 80
Colburn0004 raises to 240
joyful calls 200
Acesup0459 folds
onice247 calls 160
bastoch99 has 15 seconds left to act
bastoch99 folds
m4rcel084 calls 160
*** FLOP *** [5h 8h Td]
joyful checks
onice247 checks
m4rcel084 checks
Colburn0004 bets 240
joyful raises to 950, and is all in
onice247 folds
m4rcel084 folds
Colburn0004 calls 710
joyful shows [Tc Th]
Colburn0004 shows [Ad Kc]
*** TURN *** [5h 8h Td] [Qd]
*** RIVER *** [5h 8h Td Qd] [Qh]
joyful shows a full house, Tens full of Queens
Colburn0004 shows a pair of Queens
joyful wins the pot (3,020) with a full house, Tens full of Queens


After the flop I had thought that a couple of the calls had been with either a moderate A or a high K with how the table had been calling. After the flop I Thought I was ahead in the hand with it checking around to me, so I bet out. Player to my left goes all-in. I thought he was thinking I was trying to steal the pot and thought I was still ahead plus it was a bout a 4-1 return with only 710 to call.

My question is was the bet after the flop a bad play? Also was the call reasonable and I was just caught in a good slow play?

I ended up losing out in the tourney with AQ when a person called preflop with Q8 and caught two pair to my high pair on the board.