I prefer a bigger 3-bet if you are going to do it all. I actually don't like the 3-bet so much but without reads, its impossible to tell.

What range does he call with if we 3-bet AQ? How does it fare on that flop? If it fares well.. don't c-bet. Like Spenda said.

If you are going to c-bet, what's your plan for the turn if he calls? Its not to barrel, then you probably should not take that line.