The Genre Underground discussion

Hi. Hope I'm posting this in the right place.

On Amazon, 'Dragonfriend' (MG/Fantasy Adventure) is currently listed under these two categories (as you know, you're only allowed two):

JUVENILE FICTION > Legends, Myths, Fables > Arthurian
JUVENILE FICTION > Fantasy & Magic

In hopes of reaching more potential readers, I'm thinking of switching one of the above categories to:

FICTION>Fantasy>General

Note the dropping of 'Juvenile.' What do you think? Should I make the switch? If so, which category should I swap out? Thanks!

If it's not truly Arthurian, I'd drop:

JUVENILE FICTION > Legends, Myths, Fables > Arthurian

Arthur is not the main character (it's a story about a page to poor but kind knight who is "Camelot adjacent"), but it does have Arthurian elements throughout (starts out in Camelot, Arthur and his knights are active in the plot). It's been called "a twist on the Arthurian legend."

Then I guess the question is will this appeal to adult readers too?

True. I've been told it's an enjoyable read for adults who are open to mg/ya. Thanks for the feedback.