1. Yes as per i know MIDI needs to be updated if there is any change in applicants family status ... Others please chime in if they have any different info/opinion ?
2. Looking at current delays in overall Quebec process ( i am not sure on your federal timelines) and other delays which you might face due to changed family status in Quebec and federal stage , i can say you should initiate your spouse EE it will be way faster .
3.green & spiegel are one of the best in Canada , they are Toronto based but i am sure they will be handling family sponsorship ..
Good luck ...
Thanks for your response!
Is there anyone else here who had to update their family status after they obtained their CSQ?!