sincerely ask, file I485

My attorney would submit the 140 maybe next week, do you think after
e-filing I would immediately obtain the receipt by email with
the case number information, use that I could filing
my I485 by myself, or I have to wait for the official I-140
receipt notice from the USCIS mail (takes 1-2 weeks) after my attorney would submit the 140 documents, I only could use this official reciept to file I485?

, I need your great helps,
Warmly appreciated....