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@AnishGupta‌ Take the L1 as soon as possible.
Re your commitments and work, yes, it will be difficult to balance work and CFA, but to be honest it’s unlikely to change or get better as your career progresses, so there’s no point in waiting.
Re June vs December, imo there is never a good reason why you should choose a later exam over one you can reasonably study for right now. So I’d advise for you to go for June 2015.
Hope that helps!