Push during first blind level with AQo -- is this a mistake?

[Proofrock]

Poker Stars, 10+1 SnG.
10/20 blinds.

Hero (1200) is in MP with AQo.
Villain (1600) is in late position.

folds to Hero, Hero raises to 60, 1 caller (this guy has called every raise so far and folded to every reraise), Villain raises to 300, folds around to Hero, Hero pushes.

History: Hero has recently raised 2x prior to this. The first time hero opened with 60 from CO with A10o, two callers, and then Villain in BB raised to 360 and everybody folded.
Next hand, Hero opened raised to 60 from LP with Q10o, two calls, and then Villain reraised to 300 and everybody but the button folded. Villain took it down on the flop.

The only thing different this time is that villain seemed to hesitate for a few moments before raising this last time.

What do you think of my line? What about the previous two hands?

-cj