Is course hopping viable strategy?

I have just matriculated (fairly well, 2 distinctions & bachelor's degree) but it seems I have not made the cut for my top choice courses like civil engineering or a field in medicine. I have now been accepted by UFS to study a Bachelor Of Science majoring in biological sciences (a course with no jobs) but I am thinking about accepting, studying the course for a year (ace it) and then try to switch to my preferred course next year. Is that a viable strategy?