Save yourself the effort, if not some $, and check out
Fugawi. C$100 gets you every topo map in the province, and their software (C$150) lets you stitch them together seamlessly. Good for hours of trip planning fun!
In other mapping news, I recently discovered that you can download, for free, any Canadian 1:50k or 1:250k topo from Natural Resources Canada's
GeoGratis website. The map images are in TIFF format and include geospatial data. They can be viewed with any imaging software that supports TIFF, or they can be imported into mapping/GPS software packages like OziExplorer or Fugawi.
I'm not sure how long this has been available, but it means you no longer need to buy maps from Etopo or Fugawi.