I do know with our club it would be really hard to come up with a good list before the sale. Many members show up with Iris the morning of the sale.. Most of us that went to the digs were pretty busy trimming and labeling. I think it would be a great idea, but logistically, it would be difficult.
Whatever you decide to do Richard, I hope you have fun and meet other enthusiasts who share your passion... and of course go home with some great new Iris for your garden.