Ben:
Sebonack is certainly the hardest course I've ever been involved with ... per the client's wishes.
As hard as we all think it is, though, some of the nicest comments I've ever had about the course are from women who played it fairly often. Julian Robertson's late wife, Josie, was the first women's club champion there, and though she was a very good golfer I don't think her clubhead speed was especially noteworthy. For that matter, neither is Mr. Pascucci's, and I've seen him get it up and down from the front bunker on #3 that you are so concerned about.
The golf course is very playable, as long as you aren't playing from too far back for your ability, and the greens don't get too fast with the wind. But that last factor is out of the USGA's control, so I hope they will hedge their bets a bit on the parts they do control.