JP,
Seeing as you appear to be a member of the elite 0.1% of PPrune posters capable of stringing a grammatically correct sentence together, English sounds like a fine choice of A-level to me. You even spelt Boxster correctly.
Good luck with your GCSE's, A-levels, degree, and after that little lot, career. And do have fun in the meantime too!
P.S. I do not claim to be a part of that elite 0.1%.