If you are worried that you might need to defer or cancel, look into Acclaim Travel. I booked my DDD through them and they actually have a cancellation option. As long as you decide prior to 7/3, you can cancel for a fee of $50. It looks like they've got plenty of bibs available, too.
Tink wasn't posted until early last week, and Star Wars was even closer to the race date. And they will fill quickly, so stalk that registration page for the link!
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