Godzilla875

It's on a lower end. In normal times, you would be interviewed earlier than most, could be November - January. Covid has impacted timelines a lot, so it's difficult to predict these days.

Not necessary, you can update at interview 

As linked in the DV instructions you should check DoS reciprocity pages for details of acceptable civil documents 
 
https://travel.state.gov/content/travel/en/us-visas/Visa-Reciprocity-and-Civil-Documents-by-Country/Canada.html

 
Police Certificates
Available
Fees: Varies by Province
Document Name:  Certified Criminal Record Check
Issuing Authority: Royal Canadian Mounted Police
Special Seal(s) / Color / Format: The Certified Criminal Record Check requested under the Privacy Act is fingerprint-based, but the report does not include an image of the applicant’s fingerprints.
Issuing Authority Personnel Title: There is no issuing authority personnel title
Registration Criteria: There is no registration criteria
Procedure for Obtaining: To obtain this document, you must submit your fingerprints to a local police service or RCMP-approved partner agency.  You must also specifically request the record which includes the “RCMP National Repository entire holdings.” 
Certified Copies Available: Certified copies are not available
Alternate Documents: Criminal Record Check for Personal Use
Exceptions: None
Comments: As of September 10, 2018 a fingerprint-based, certified criminal record check from the Royal Canadian Mounted Police is required by U.S. Consular posts in Canada. 
For more information on how to request this document, visit rcmp-grc.gc.ca