I don't like Kiawah on here due to the mapping of the greens, but 17 is one hole that I like. As Jim said a 3-4 (often less depending on wind) Iron for me gets there comfortably, but my advice is to hit a little long and left to ensure you avoid the lake. DONT miss the ding to the right - even light l-r breeze is trouble.
The back pin in strong winds is tougher.3 iron or even 3 wood but again long and left is OK - a easyish up and down.
Last tip - forget the water is there, half the battle is won.