You will only need the new passport. You dont include any work permit number on your EE profile.
Yes, so when you receive your 1-year Canadian work experience, you can create your profile.
When you receive your new passport, you can update it into the system for EE easily (if not yet invited). If you have a work permit extension going, or if you are invited for the CEC and you receive your new passport, then you will need to submit the webform