It would be fun to plant some random DLs around and see what I get! I do like to plant out bigger plants when I can, though... would you consider doing double fans or clumps? Can you keep each variety separate as you dig, so that it's possible to order multiple fans of the same (unknown, I realize) variety? I'm not trying to add to the work of this endeavor, just seeing what the possibilities are.
I've got a couple other group buys going for this fall, for our local (mid-atlantic) group, so it's possible we could get a bunch of interest from folks going to our fall plant swap, and we could put together a bigger purchase that way.