What professional paper to do with F9?

I have just sat my F7 and F8 exams and should I pass these the only fundamental paper I have left is F9. I like to sit two exams per sitting so I was wondering if anybody could offer some advice on what the best combination of professional exam would be to sit with this paper in March 18?

Given the changes to the syllabus I can’t do P1 or P3 as I would need to have done both by Sept 18 for them to count which I won’t have done so it’s between P2, Advanced tax or advanced audit.

Any advice would be greatly appreciated thanks!