Her image is quite similar to hikki (well in the article her father was hikki's hair stylist rite...?), and not to mention that Miyake Akira is the one producing Kaho. Even her voice has a tiny hint of hikki. Well all I can predict that is either she will be bombed in the beginning, or she will be popular for the first two years, then starts sink rite after (Mai K is a good example).
Edit: Oops... I forgot about Ayaka.
Yeah she didn't survive long enough to be a legend as well.