If you order GCMS right now, you'll find information relating to sponsor approval. This can help you understand if they see your file as simple and how satisfied the officer was. So now isn't a bad time.
Again once your file is transferred its going to eat dust for at least 3-4 months (for NDVO). So don't think it'll help much during that time. Again after 4 months of FT assuming NDVO pulled your file out of that dusty pigeonhole, it would be good to order after a month or so.
Long story short - After SA applying for GCMS helps with the visa officers notes on your file. Then i'd say after 4 months of FT is worth. GCMS costs $5 and doesn't really affect your file, just increases the lines for "INCOMING COMMUNICATION" on the final report. So order it when you feel right, doesn't really hurt much. Now the ATIP Consent form is just required to be submitted once in a year.
Cheers
Spicy
when is a good time to order GCMS notes, I mean after how many months when application received?