knowing the author's other works I would say it will be fantastic, Blazuki has the best avatar fanfics in my opinion, the others like One piece and TDG are also good I just hope he doesn't end up giving up on the current works that he's doing at most put in temporary hiatus...
write after read a three chapter and this enough to give 5 star. Shame about the harem tag. Its pretty good so far though so i will give you a glowing review.
I came from your other novel on avatar, I see potential in this one especially with it being one of the few Legend of Korra fanfics. Good luck with writing and take my stone and collection!