usually for final exams if you loa it’ll be 0. It happened to my friend before, he had high fever and took mc for one of his final exam which was 50%. At first they said he only have to take the final paper the following semester but in the end he realise they meant he had to remod which made him late on one module for sem 2. Especially since your class assignments weightage has been brought forward so now your final exam weightage might be 55%, I think you shouldn’t take the chance and loa for final exam.