Posting the plan on the other sites you mentioned will undoubtedly bring it to the attention of Ms. Rowling too, which I think is an excellent notion.
Count me in for $10.
The only potential complication I see is getting the 'new' books (presumably from ConnStore
) on the Reader. If we can't make it work to actually put them on ahead of time, perhaps we can include a gift certificate for an amount appropriate for the list you have in mind, and that list of titles as a set of suggested ones to check out?