To prep for Kindle exclusivity, you get to cut cords.
I contacted the nice folks at SELF-e/Library Journal. In two weeks time, the books should be all but vanished from the Seattle and King County library systems.
Smashwords-wise, I'll opt out of distribution channels and then "unpublish" on Smashwords itself.
And then place myself in one big monolithic hand and see what happens. My guess? Not a Hell of a lot, but I'm acclimated to that pace.