Question regarding campaign additions

I have all 3 campaigns on my account, and I want to add the CE version of Factions onto my account (I have all CEs except Factions). If I did buy CE edition of Factions now, and added it to my account that already has all three campaigns:

Will it actually work?
Would I get the two extra character slots?
Would it add the Aura around the Rit and Sin?
Will I get the bonus items? (Like Kunavang)

Thank You in advance.
~Silent

I think if you already have Factions, you will not get another additional 2 character slots.
But you will get the aura/special dance and Kuunavang.