It is a big help that the French are likely to offer Orka which is tied with KSS-III as basically one of the largest conventional submarine designs on the planet currently. On the other hand, the agreements made for work with domestic Canadian industry to help develop the capability to maintain/refit the submarines alongside any work sharing that may happen is just as important as the procurement of the boats as well. France has a less than spotless record regarding this sort of thing, so that alone does give me pause to consider working with them.
It is important to realize as well that Germany would likely be pitching Canada the Type 212CDE, which is the same variant that was pitched to the Dutch. The CDE shares the shares the same design, hull diameter and system components as the German/Norwegian CD however, it has additional sections placed in the hull which increase its weight by 500t, brings the length to over 80m and provides additional accommodation/fuel/stores loads for longer deployments. This helps level the playing field versus the larger competitors but there is a bit more risk to doing this obviously.
Orka is a good design it would seem but as with Spain, I have serious questions about the viability of France as a good faith partner in a program that is really going to require extensive cooperation.