I would do as most people have suggested - avoid the US, route through New Brunswick, Quebec, Ottawa and West!
Helicopters Magazine (don't quite know the website) has a complete list of all operators, who you might like to stop off with - check they're not on fires, though! All the phone numbers will be in there.
Another useful website is
www.canada411.com, which is the national telephone directory.
It's 9-12 hours from Dryden to Calgary - and be prepared to talk to Winnipeg when you wish to talk to Dryden all that will be in the CFS
Don't mess with the weather and take some photos for us!
Phil