yes you are right, i have the same case and i applied through London, first stage of the process which is sponsorship approval will take about 30-45 days(you may want to see this page http://www.cic.gc.ca/english/information/times/perm-fc.asp) if your application is complete and you have included all the requested documents at this stage, second stage could take upto 8 months if everything is in order, add another two months if you pay fee in parts and add aproximately two more months if an interview is required!
you dont need to provide any educational documents at this point, if they need it they will ask for it. but my understanding says that no educational documents are required for spousal cases unless to determine how and where that period was spent!
this means we are looking at from anywhere 6 to 10 months, but again, every case is handled on individual basis!
hope this helps, seniors can be more precise on things i have mentioned!