After talking to other dental students and dental schools this is what I understood.. Is it a big deal if you do what you said? Absolutely not. Could you add all of the courses? Yes. Should you do it? It depends on what the courses are. If they are really just easy electives that have no relevance to dentistry or health or any critical thinking then it is probably not a big deal if you include it or not. Everything you put on the academic update is optional but obviously the better you did on your courses and the more challenging your final semester's courses are, the better. So use your judgement. I would personally wait to choose my electives and then put everything on the update. But if you don't find that out for another month then I would just submit what you have and not worry about it. Hope that helps.