At Kiawah you need at least the following winds to reach the par 5's (from master tees, assuming you have the best distance balls):
#2 - either tailwind +2, or some right to left/tail combo of +2 or more. You probably need a minimum of 289 off the tee to position yourself at the end of the fairway without going in the rough. If the wind is +5 or more, I usually only hit my driver 95%.
#7 - anything better than -2 or 3 in your face, and you should be able to reach. A 235 3WD with TS (aimed left to avoid the hill) might get on.
#11 - pretty much need a neutral or tailwind to get on.
#16 - can be reached if you have a high tailwind (+15 or something). You can hit full bs on the drive to reach the upper right part of the fairway. Then you might have 255-270. If you hit the Ping 235 3WD accurately you can catch the hill on the fairway and roll onto (or more likely through) the green.
Good luck