It is recommended that a married applicant should always apply as married. Later on, after the invitation a valid reason has to be given to the visa officer for the same.The Visa officer can reject the profile if the reason does not seems to be valid or if proper documentation is not submitted in it support.

In the normal scenario, with a high CRS score and after getting the invitation, the total timeline for the process is at least 12-15 months. This is From ECA to the stamping of the Passport. No one can get a PR Visa in 6 months.

NO, Various Provinces pick various applications as per the requirement of their economy and as per the profile of an applicant. In that Scenario the CRS score does not matters. But the chances of getting an invitation from a Province with less score is less than 1% of the total applications submitted in theExpress Entry pool at any given point of time.

No, But if done, it gives a boost to your CRS score which in return can help you in getting the PR Visa.

No. A case filed by an individual himself or by an Immigration Lawyer holds the same value in the eyes of Canadian Government. A case filed by an Immigration Lawyer does not gives you any edge by any means apart from the knowledge about the process which a lawyer might be having more than an individual.