The premise of the fic is good. Too bad the actual fic itself starts off promising and goes bad very quickly.
Harry growing up with Luna would have been a great concept if the story wasn't so anxious to move on to the shipping part of Harry/Luna. As it is, the whole thing got Strangled By The Red String
, or in this case, the Blue Magic Strings, so badly it's almost comparable to what people complain about canon Harry/Ginny. The story throws out any required foreshadowing, character development and set up in its rush to get Harry and Luna together, and relies on a lot of contrived details that directly contradict canon.
There are some mildly interesting characterizations of Mc Gonagall
and Selene Lovegood, but the fact the story falls into almost-cartoonish character bashing of the OOC Dursleys and OOC Dumbledore rather ruins it. I can't say I liked this fic, although I really wanted to when I started it.