How many Disciplines does a Mystic get? UA33

At level 1, An Awakened Mystic gets 1 Discipline (any order) and 2 Bonus Disciplines (Awakened only) at level 8 with a total of 4 disciplines known (per the advancement chart) I should have a total of 6 right? I have a friend who claims you will have the extra until the advancement chart catches up. So which is it?