Is this trip coming up in 7 months your planned trans-Canada tour? If so you really do need to read up on and get some hands-on experience with basic bicycle maintenance/repairs as well as some hands-on short tours experience before embarking on a trans-Canada tour. A good book can be an immense help. Otherwise you run a very real risk of running into major insurmountable problems that could spell the end of your trip and possible in the worst location for that to happen.

Cheers