5.5 6 max: AA again. Flop allin or small conbet?

[Karn]

Blinds 30/60
Button 1500
CO 1500
UTG+1 1500
UTG 1500
Hero(BB) 1500
SB - 1500

Hero has A [img]/images/graemlins/heart.gif[/img] A [img]/images/graemlins/spade.gif[/img]
Hero posts BB
UTG calls 60
UTG+1 calls 60
CO calls 60
Button calls 60
SB calls 30
Hero raises 300

UTG folds
UTG+1 folds
CO calls 300
Button folds
SB calls 300

Pot: 1200

Flop: 2 [img]/images/graemlins/spade.gif[/img] 6 [img]/images/graemlins/diamond.gif[/img] T [img]/images/graemlins/heart.gif[/img]
SB checks
Hero bets 400
CO folds
SB calls

Turn: 5 [img]/images/graemlins/heart.gif[/img]
SB checks
Hero bets 740 and is all-in
SB calls 740 and is all-in

River: Q [img]/images/graemlins/club.gif[/img]

Hero shows A [img]/images/graemlins/heart.gif[/img] A [img]/images/graemlins/spade.gif[/img] (pair of aces)
SB shows 5 [img]/images/graemlins/diamond.gif[/img] 5 [img]/images/graemlins/club.gif[/img] (three of a kind, 5)

On the flop i decide that table isn't dangerous(and it wasn't!), so i can try to give the impression that i don't have a hand, but have overcards and make a diffident continious bet, to give him a chance to call on a pair like T9 or 76 or pockets. So he did...was i wrong in my thoughts&