This could be a potential red flag, if you plan to stay in Canada until you have established the required one [full] year of cohabiting with him to qualify for Common-Law sponsorship, and then immediately submit the application. CIC could see this as a `marriage-like' relationship of convenience, for the sole purpose of obtaining PR status.
The reality is that the soonest that you would have authorization to work in Canada, would be ~ December of next year...IF you:
- Submitted an Inland application along with an Open Work Permit (OWP) as soon as you have reached Common-law eligibility
- If the OWP Pilot Program that was introduced on December 22, 2014 is renewed. It was a one year `test', which seems to have been successful, but...CIC is an odd duck when it comes to things that coincide with logic.
The Inland stream is painfully slow (currently ~ 26 months) and the applicant is strongly cautioned that s/he should not leave Canada during the process. Being refused re-entry would, in essence, kill the application. So, you'd be able to work in ~ 14 months (from today), but wouldn't have the
total freedom to leave Canada, knowing that you would be allowed re-entry, until ~ late 2018...which is nuts! It's possible that the processing times will decrease...but it's also possible that they'll get worse. Who knows!
Conversely, submitting an Outland application next year would get you through the process faster, but you'd not be eligible for the OWP. You could either remain in Canada (as a visitor), or return to France while awaiting your PR approval. Once you have established Common-Law status, one partner can leave Canada, so long as the relationship remains genuine.
I know...a lot to process!