Hello from the far away Athens City, Greece.
Your Idea is Nice and Interesting.
The Pattern for Arkansas, Illinois, Indiana, Missouri and Ohio, the Major Soft Red Wheat U.S.A States, is very Wet.
And seems that this will continue for a time Period as see in this Site:
http://www.cpc.noaa.gov/products/fews/global/north_america/united_states/ (Make also Mouse Click in the Left under Model Forecasts in the Precipitation and choose in the Upper Middle the Precip. Hours and Days Informations).
Now, i want to say that possibly for to continue in your Idea is, to watch for to trade maybe, if you already have not do it, the Calendar Spread of the front Month December 2009 in Chicago with Long Months of 2010 in Chicago, for example.
Also if had happen a such case in the Past, i mean between the CBOT Soft Wheat and Kansas Hard Wheat, which i do not know at all for that by my Side for that case, i mean if had happen ever a such event in the Past, you must see what Conditions had occur that time in the overall Global Wheat Situation and to how affect that, that Wheat Spread.
Right now exist Big Quantities of Wheat in the World. The U.S.A Wheat Exports have drop because of the competitive Exports of Russia and Ukraine, especially. Also, Good Weather Conditions had occur or occurs in some of the Countries that Export the U.S.A.
That means that need less Quantities from U.S.A to import or does not have the need to import any Quantities at all, not only from U.S.A but from other Countries as well.
Anyway, i wish you Good Luck if you decide to trade your Idea or Not...!
Kind Regards,
George Kanellopoulos.