$100 NL on pokerstars.

Stacks: me $120, opponent $90.
I have AK in EP and raise one limper to $5. Only button calls. I haven't seen him show down many hands nor do anything unusual.

Flop: [Kc][7h].

I decided to overbet the pot here, making it look like I have a pocket pair and want to take it down. So I bet $15 into the $12 pot. Opponent min. raises to $30. What is your move? I can't really put him on another K (I don't think he would call with KQ), unless he has AK as well. If he indeed believes I have a pocket pair, then he might just be representing the K. He can also have the 77. I decide that I'm either way behind or way ahead, so just call.

Turn: , giving me the boat. What is your play?

Pieter