pallan - If I were you I would definitely not risk failing to apply to university on the off chance that you get accepted onto this scheme. Remember, statistically speaking, it's very unlikely that you'd be accepted.
Why not go to university and continue to apply to BA regardless? You can always drop out if accepted onto the FPP (while still enjoying 1st year of university, regarded as the best year of your life by many).
If you study an academically rigorous subject at university, it will make you an immeasurably more attractive candidate to a wide range of well-paid careers.