Hi Etienne,
Agree with you, there are not many with the same visa.
I am also coming with 475 visa in perth very soon. Please share your experience. And suggest any place outside Perth with best possible job opportunities.
Below link has the complete details of documents required for 887 visa.
http://www.immi.gov.au/skilled/general-skilled-migration/887/
Hope this helps !
Thanks
Jit