The crossover books had a huge emphasis on keeping the two realms separate. Bc of this, I'm going to start Aster in Brooklyn and keep her away from CHB as much as possible.
Also for most of the characters could you tone down their knowledge of their powers as they just found out so they aren't going to be super crazy fighters I'm also toning down my character he isn't going to be able to use his combat avatar whenever he wants as its a huge strain and he isn't going to be some badass fighter yet as sobek just gives him tips