Revan's at it again! I swear you're mad for running so many games at once.
Is there any reason why the players are unable to raise the dead? It seems somewhat to go against the spirit of the Lore of Vampires.
I am concerned though about the character's power levels. With 500 points to spend each it seems like characters could be really powerful, game breakingly so. Obviously i don't know what enemies you intended to set against the party but still. There also seems to be only limited potential for character growth (narratively and from a 'levelling' standpoint), especially as an ancient old blood loaded up to the gills with spells and magic items.
I am tempted though to create a bonkers Necrach and the uni holidays are coming up.