Well, work with a elf char as said there is plenty of time to roll and make the char. But Lilitu would be fine, but there may need some stat adjustment with it (mostly less spell-alike abilities and more focused with their powers). There is Alu-demon (http://www.d20pfsrd.com/bestiary/monster-listings/outsiders/demon/demon-alu) which would be good candidate to be member of Aryvandaar higher houses (like first or second generation fey'ri, just add elven racials in and remove one bonus feat from alu-demon to fit her in although getting racial bonuses need bit math).<br/><br/>Succubus (http://www.d20pfsrd.com/bestiary/monster-listings/outsiders/demon/succubus) is not bad either but would need class levels to make her CR 12. But she would had been planar ally/planar bind brought to the Aryvandaar so you need establish connection with a PC or NPC is your summoner but you would be left mostly own devices. Or that your directly connected to Malkizid himself.<br/><br/>Anyways same as PaleEnchantress I will post later changes to Hathran and Lilitu demon race (workload just keeps growing -_- ).