Hi, This is my first post and I'm hoping you guys could tell me a standard line to take here. I'm always unsure how to play KK OOP, so I wanted to check with you and ask for any general advice, as well as discuss a specific hand that is typical of my problem.

1/2NL
Hero in BB: KdKh ($200)
Villain on BTN: standard TAG that is short stacked, not creative. ($150)

Fiver or six limpers, Hero raises to 15. Everone folds except Villain on BTN. Pot is about 40.
Flop is 5s6s7d. Hero checks, Villain bets $25. Hero raises all-in for about 125 more. (Is this overly aggressive? If we were shorter or deeper, would this be obviously incorrect?

My thinking at the time was that Villain has either a smaller pair (88 with open-ended draw,99 with a gutshot ,TT or a flush draw with two overs). Perhaps leading out would have been better? I didn't really want to play a huge pot with just an overpair, and I feel like I was a bit spewey to shove there.

I am happy to post the results, but I don't want to influence the analysis ahead of time. Thank you for your thoughts and advice.