If ya take the back route to Summer though you would be fine - port hills road.
Are you looking for schools in Zone??
Spreydon, Beckenham, Cashmere HoonHay, Halswell, St Martins, Opawa is all nice

And all got good schools
www.rentwell.co.nz might have some places, also have a look on TM as there are still a few on there to rent, not as many as there used to be of course, but i think still about 800 homes around chch