Axyris,
So as not to confuse others, you do not need to contact USCIS field office. The KCC email confirm tells you to contact uscis, but this is impossible as uscis will direct you to the I-485 instructions. I have not read in any of the past DV AOS forums where anybody contacted uscis.
If you have collected all docs and received dos $330 receipt and kcc email confirm you can file 485. Download the instructions from uscis.gov and send your docs. On this thread you can find general docs that should be sent with your application.
Okay, thanks. I will file 485.