Pocket A's with a paired board...too timid?

I am currently in a MTT limit hold'em tournament on PP and I have a hand that I just played, and I am not sure if perhaps I played it to timidly due to a board pair. I was dealt pocket AA and a pair of 7's came on the board with a quick aggressive raiser to my left. I really did not have a read on this player yet. I merely went off the base of the quickness and general fealing of the bet. This caused me call more than raise on the proceeding hands, especially when a third 7 appeared.

Here is the hand:

Table Multi-Table(407891) Table 11 (Real Money) -- Seat 4 is the button
Total number of players : 10
Seat 1: stuck621 (835)
Seat 2: H_S_V (1055)
Seat 3: lowstake (625)
Seat 4: ddincredible (715)
Seat 5: cgmksm (670)
Seat 6: Mack_Wonder (885)
Seat 7: xxl211 (875)
Seat 8: flushgroove (1655)
Seat 9: maxeybird (840)
Seat 10: UKPhiSig06 (1845)
cgmksm posts small blind (15)
Mack_Wonder posts big blind (30)
** Dealing down cards **
Dealt to Mack_Wonder [ Ah, Ac ]
xxl211 calls (30)
flushgroove folds.
maxeybird folds.
UKPhiSig06 folds.
stuck621 calls (30)
H_S_V folds.
lowstake calls (30)
ddincredible folds.
cgmksm calls (15)
Mack_Wonder raises (30) to 60
xxl211 calls (30)
stuck621 calls (30)
lowstake calls (30)
cgmksm calls (30)
** Dealing Flop ** : [ 7c, 8d, 7d ]
cgmksm checks.
Mack_Wonder bets (30)
xxl211 calls (30)
stuck621 folds.
lowstake folds.
cgmksm folds.
** Dealing Turn ** : [ 7s ]
Mack_Wonder bets (60)
xxl211 raises (120) to 120
Mack_Wonder calls (60)
** Dealing River ** : [ 2d ]
Mack_Wonder checks.
xxl211 bets (60)
Mack_Wonder calls (60)
** Summary **
Main Pot: 720
Board: [ 7c 8d 7d 7s 2d ]
stuck621 balance 775, lost 60 (folded)
H_S_V balance 1055, didn't bet (folded)
lowstake balance 565, lost 60 (folded)
ddincredible balance 715, didn't bet (folded)
cgmksm balance 610, lost 60 (folded)
Mack_Wonder balance 1335, bet 270, collected 720, net +450 [ Ah Ac ] [ a full house, Sevens full of aces -- Ah,Ac,7c,7d,7s ]
xxl211 balance 605, lost 270 [ 8s Ad ] [ a full house, Sevens full of eights -- 8s,8d,7c,7d,7s ]
flushgroove balance 1655, didn't bet (folded)
maxeybird balance 840, didn't bet (folded)
UKPhiSig06 balance 1845, didn't bet (folded)