timeline depends on the country you are applying from. so check the processing times for your country on the CIC website.
Documents are a lot and since we applied together in one envelope, its hard to split them. its everything you will need for a study permit and more. below is what i remember;
proof of funds
offer and acceptance letter
proof of registration for semester(timetable etc)
proof of accommodation(in Canada)
SOP by my self (study permit)
SOP by spouse (OWP )
explanation letter by me(why i need spouse and toddler with me)
employment letter from spouse employer
marriage certificate
pictures from all vacations(to prove we travel together)
proof of education/ qualifications(self and spouse)
proof of ties at home
application forms