I've been studying with JapanesePod101 for around 3 months now because I need Japanese for my work - and got kind of hooked anyway. But my real wish is to learn Arabic. Any thoughts on whether learning both at the same time is sensible? Does it make better sense to get to a certain level (and if so, how far? Intermediate?) with Japanese before taking on Arabic, or does one get along fine trying to learn both at once? Any experience or insight on this?