First of all, you would require C-opr to land in Canada as an immigrant, C-opr is as a single entry visa for an Immigrant to land in Canada... Check in your status as an
Immigrant to Canada Under C-opr
In case of adding you it can be done either after he lands you would have to apply for dependent visa after he lands there... or you would have Redo the whole Express Entry process as an married applicant and get your ITA Again.