my suggestion, book a court marriage asap, get it done with, get the certificate and send it to the case officer (if you have one already) else upload it, as and when you get a CO you both will get a visa together. there are one zillion proofs required if you plan to apply for her visa after you get yours. but remember you do need a marriage certificate if you plan to add her now, you can not jsut add her without any documents.
ACS assessment : May 2008. Visa Application VE 175 : September 2008. State Sponsorship : September 2009. CO Allocated : 17th November 2010. Medicals and PCC submitted : 13th December 2010. Medicals for my Daughter : 22nd December 2010. All Documents Met : 31st December 2010 (except for meds for my daughter)
VISA GRANT 27th January 2011
Reached MELBOURNE on 16th June