HELLO
@maki22,
Just to add a few more notes to the answers to your question below,
For question 2: Yes, your returning to Canada would impact the decision for your spouse's PR. Note that, it is expected that canadian citizens who sponsor their spouses for PR are expected to be living in Canada. If you are not living in Canada by the time of your sponsorship application, you are expected to prove your "Intent to return" to Canada if your spouse is granted the PR.
Hence, it will be in the favour of your application if you return to Canada with your child while the application is being processed. If you choose this route, I suggest you send an updated letter or documentation to the Accra office showing proof of your return to Canada. You can documents such as a recent tenancy/lease agreements in Canada, pay slips showing you are receiving pay in Canada, utility bills/contracts in your name, etc. It will be in your interest to do this as soon as you can after returning to Canada AND before a visa officer actually starts to review your file. This will save you lots of time.
If you are still resident in Accra (or elsewhere outside of Canada) when the visa officer starts to process your application, be sure to expect a letter from the office asking you to show proof of intent to return to Canada. In some cases, if a visa officer doesn't feel enought proof has been provided to show intent to return to Canada, such application will be denied.
Please take this advise from someone who learnt all this the hard way.