Marketing jobs are notoriously hard to get and could technically be anywhere from downtown to the suburbs if you get one. Affordable and good transit links don’t really go together. The better the transit links the more desirable the neighbourhood. Honestly the best option would be for one parent to move and secure employment before moving their family. It is harder to rent without employment and in a city like Toronto you could end up with multi hour commute if you rent in one area then get a job in a on the other side of the city. Unfortunately many people in Toronto do commute for 1-2 hours in each direction but I would at least try to minimize that if possible.