sine you already 100%'ed abyss you don't really need a r3 aegon at the present moment so nick fury wold be better for skill, as for your mystic you can do any of those three whichever one you like the most, cause I know you said you have the AG. i would probably take you awakened SS to rank 3 and wait for doom with your next mystic t5cc and keep your AG for him as well for more prestige and a bit more amazingness out of him.