第四年拿core没有什么大不了的。看就看有些core module只在sem1 or sem2 offer & some pre-requisitions. You gotta figure those out first.
你应该说说你还有多少门课没有拿。如果拿这个IA,你一个学习必须拿几门课才能毕业;不拿这个IA,你一个学习必须拿几门课才能毕业。一般来讲,这个对fyp没有什么影响,个人觉得。
In case you are unsure of certain policies, you can approach your department PIC for their advice, as what i did last time.