A levels + A2 and AS arabic?

Hey guys,

well I am doing computing, chemistry and biology at A2,
got BBCC in bio, comp, phys and chem respectively

I am predicted AAB, and I need AAB/AAA because the B predicted is in chemistry, which is key to pharmacy

I'm scared i might not be able to get an A in computing though, i'm worried about the coursework, and I only got a B at AS

so i'm thinking of picking up Arabic, I am Arab and speak it fluently, I attended arabic school for most of my life and know how to write and read it, and can understand it obviously. Also I wasn't born in an arabic speaking country, so it counts as a main A-level. However i'm wondering how difficult it would be to do both years of arabic in one year, and is it really difficult? Can i self teach it? will it get in my way?

anyone who has done it?