Easiest answer is to google records of eminence. By flagging that at level one, you can start doing quests for it while leveling up, which rewards you with sparks. You can gain enough sparks to equip your character all the way to iLVL 117 without spending any gil. Just make sure that you have the combat for your region always up , as well as the damage received and damage given. If you dual box or have a friend, always level sync, then you can have the level sync ones up for even more spark goodness!