A LEVEL ARABIC NEW SPEC, need help!! Watch
But yeah the whole different dialect thing is an issue
If you are an Arab then why not do it for A Level so you can say you have 4 A Levels but it's not going to seem that amazing considering you're a native Arab or you were bought up in an Arab household. If you do a language you're not native to or familiar to, then that would seem much more appealing to universities but there's nothing wrong doing it for A Level.