I disagree with the sorority betta stocking. I've had 3 female bettas in a 10 gallon and I don't think there's just enough room for that. A 15 or 20 would be minimum for a sorority with at least 4 fish IME.
Great thread though! I'm surprised at the high number of fish you can keep in 10 gallon. I've always been told to have much lighter stocking than this, but nobody seems to be debating this so it must be fine!