The thing that's great about the Grand Cru seatpost is that even though it has so much setback, the clamp is small and positioned in a way that leaves a ton of room for fore/aft adjustment. If you're planning on using a Brooks saddle (which has short rails), you'll find that even with the saddle all the way back, it's still pretty centered above the post.
Oh and BTW - I can have Noodles in stock in three days.