It really depends on you whether or not they're enjoyable, but as someone who takes Eng lit, History and French, I'd err towards yes. Research the specifications and ensure that you like the contents. Also, remember that all three involves heavy amounts of writing and researching. In terms of respect from unis, English lit is a facilitating subject, but I don't know about combined. Many unis say that it's useful to have at least 2 facilitating subject A levels, but it really isn't always necessary. Take what you enjoy now, but remember that whatever you take, there will be times when it just isn't fun - no subject's perfect!