Do you have doubt about being a Muslim? I hope not! It is another topic and needs to be addressed separately specially due to your background as Canadian and being in the eternal warfare crossfire between Islamic civilization and the roman one (western civilization).

As for your concern that your husband may change, I think you need to remember that change is the only constant .... I can tell you about myself, I've changed after marriage...Believe me it depends on how the family as a whole is evolving.
Ask yourself the following questions:
Do you both have positive attitudes?
Are you pushing things for the better or the worst?
Are you changing him?
What are your guidance and references in life?