[SHnewbie]

I play this hand the same. As far as the free showdown raise, I believe this is a perfect spot for it. The pot is of a decent size and you would prefer that your opponent folds overcards. Your hand is vulnerable as well and the key is that you can safely fold if you are three bet here. Also, you would most likely play a King this way, so your giving away no information to your opponent. You should have the best hand against this opponent often enough and you might even fold out a better hand (small pair) by raising.

NH.