[Luke]

I like the initial 3x BB bet, as a larger raise may deter weaker hands that you're a coin flip with or ahead of from playing with you, but you'll still have to call all-ins from the button and SB when they end up having big hands that dominate AQ.

After the button pushes, you're closing the action, getting 695-320 (~2.2-1) so assuming you have no special concerns about going broke, you need 32% equity or better to call profitably.

Using Pokerstove, I see that you'll have that much equity against even a tight range:

33.3078 % { AQo }
66.6922 % { AA-99, AKs-AQs, AKo }


Of course, as you add other hands to your opponents' range, like AQo, AJ, AT, KQ, smaller pocket pairs, pure bluffs, etc., AQ gains equity VERY quickly:

50.0494 % { AQo }
49.9506 % { AA-66, AKs-ATs, KQs, AKo-ATo, KQo }


So unless you put this guy on an Ultra tight reraising range, you need to call his all-in. But given your positions, his stack size and the fact that this is Party, I think the 2nd (looser) range of hands is closer to reality than the first.

Luke