Well, I suppose it would depend on the demand of your course, and how well you cope under pressure. However, I would think it possible because 1st year is the least demanding and therefore the best opportunity to try and take on a new skill. Also, how much time the university of your choice recommends/asks you dedicate to the language course. In my personal opinion, the pros outweigh the cons, and if it turns out to be too much, you can always drop the extra workload if necessary (but in good time so you can replace it with something else if needed!)