Thanks a lot for your replyHi,
1- Yes, the EE profile can be updated at any time. It is only locked after you get an ITA.
2- No. Dont worry about this at all. Post-ITA, you will only need to give details of what you were doing in the past 10 years.
Spouse - Nothing. Say she has no work experience.
3- No, only post-secondary education is required.
All the best