Hi - I thought I would update this in case anyone has the same question as me in the future - I got my 489 family sponsored visa granted today!
My sister sponsored me and my visa condition is that I must live and work in a designated area - which is anywhere in WA
For info my time line is:
EOI for 189 submitted 27/06/17 (60 points) Welfare Centre Manager occupation
Police check submitted 29/06/17 (certificate completed 06/07/17)
Updated EOI submitted for a 489 family sponsored 16/08/17 (70 points)
ITA received 22/08/17
Medicals completed 30/08/17
Visa application submitted 01/09/17
Direct visa grant 23/10/17
I didn't use a migration agent and had key documents certified (birth cert, passport page, driving licence, degree certifcates/academic transcripts etc) I completed form 80 for myself and my husband and form 1221 for my husband too
I hope that is helpful to anyone searching for the same visa type - good luck!
I am so excited - I just need to find a job now and we can go