Hey, good luck with the challenge. I haven't self published in some time but belong to several Facebook groups (which I also have not logged onto in quite some time). I want to say he was in the group "20 Books to 50K" II am a member of, that was started by another phenomenon, Michael Anderle. If you are not in that group, I highly recommend it. Anderle was on fire when I bowed out, some of his proteges breaking ground that no one considered possible.
I am definitely part of the 20 Books to 50K--I think Anderle was who ultimately led me to start following Chris Fox on YouTube--He has some great videos for authors.
I don't get on Facebook much but I have found several posts by people in the 20Booksto50K group that have been instrumental in helping me plan this challenge. Good stuff there as long as you are willing to sort through the chaff.