I take it from your post he called and showed you 55 or maybe TT for a set.

Without knowing that, flopping top two pair with a stack that is fairly short like yours I'm getting my money all in. I don't like your all-in bet though. I would make it 600 and call all in if he raises and if he flat calls I'd push any turn. I'm looking for a call and a check raise all in may scare him off.

I think your preflop call is fine. I think you could definetly argue for pushing here preflop also. There has been 1 limper and the button only min raises. Looks to me like he's trying to cheaply get rid of the blinds and get MP2 heads up. A push could very likely win it right here and if called QT suited isn't the worst hand to be in with.