Well, I guess I imagined Vader personally killing or at least leading the charge on most of them. And considering that many would hide out and require a powerful Force user to find them and personally kill them, I always imagined it taking years. And while 8 months could be enough in a compressed extermination, by the end of the movie as it now stands we don't have 8 months, we don't even have 1. I guess the only solution is for aalenfae to shrink her belly and allow the movie to appear to take place in a much shorter time frame. We can then assume Anakin hunts them while Padme has the kids. Thinking about it, he'd have to completely cut her from Mustafar it seems. I think she'd have to flee after Obi-wan tells her what Anakin's done, and she'd have to believe him.
I know this is aalenfae's movie, so I feel kind of bad carrying on like this, but it's an interesting idea. Perhaps we should move this to the radical redux thread. I feel like I would need to think more on how to make it fit, but I don't want to use up his thread too much on this...unless he really thinks this is a fantastic idea of course ;)