your career plan is valid as it provide knowledge which is relevant to become ips officer but you need to prepare for other subjects too because UPSC's ips broad syllabus includes Indian governance and current affairs too.

I advice to choose b.a in psychology in india as this avoids the need for an equivalency certificate after your graduation from canadian universities from the Association of Indian Universities (AIU) that is mandatory for foreign degrees.

But still if you want to prefer canadian degree then you can consider Simon Fraser University and the University of Windsor which offer a combined degree B.A. in Psychology and Criminology.

Hope it helps...