Do this 🙂 Although you can't be sure you even scored low quite yet! Even if you did, I personally think you should still apply anyway and write in January. Might as well give this cycle your best shot, right?
Also, are you able to apply discretionary to explain your grades? If so, that might help you with your splitter status.
Does ubc take into account what your undergrad major was? I am hoping to apply next year but I am in science and my gpa is not as impressive as some students with 90+. I have an 80% but I also took ochem and cell bio which tank my gpa.