Looking over the knowledgebase for accounts, multiple platforms, and registration codes I'm still confused as to what I need for my specific circumstance which doesn't look to be covered in these FAQs:

Will I be able to play more than one character at a time?

Important information for those who have pre-ordered the Playstation 3 version.

Can friends and family play simultaneously if they are on different accounts?

What I need:
I want to play with my wife.
We have one PC and one Playstation 3.
I sometimes want to play on the PC, and other times play on the Playstation 3.
My wife will most likely always be on the Playstation 3.

1) I'm guessing we need two separate service accounts, correct?

2) Do I need a second copy of the Playstation 3 version of the game? One for her, and one for me?

3) Do I get the cheaper Legacy member pricing on the second service account I have if one is required?

Thanks!