Actually Jeff and Huck, Ran had mentioned this to me recently and wondered if we could get something together for fall of 2007 since there are already other outtings afoot for this year. It is my opinion, and I think Jeff can back this up, that Lawsonia is magical in first week of October. Wisconsin fall colors are about, and after first frosts, the native grasses in the roughs lay down. Lawsonia has had a bailer come in some years to cut the rough down along about that time. Then it is sort of stubby and not as beautiful. But, that isn't a deal breaker by any means.
Personally, I think we are better off going with tentative ideas for fall of 2007 because I would imagine a side trip to Erin Hills would be part of the package. That will give Erin Hills a year to knock some of the kinks out. And, Erin Hills will be even more specacular color due to its surroundings at that time of year.
Of course we always have to worry about fall rains that can take away some of the joy. But, I'll put Wisconsin along side any other state for golf at that time of year when without rains, the ground firms up and golf is just played in crisp air and a golden light.