I'm really glad I chose the subject. I love the cases, the theory, the modules. I've just completed a week of work experience at a solicitor's and really enjoyed seeing the theory I had learnt in my first year applied directly to a contract case.
It is a hell of a lot of work but as long as you plan, organise and prioritise you will be fine. Just don't let things loom over you and do them the day before, it's the same with coursework a lot of work and research has to go into coursework and essay writing.
My only advice is make sure you will enjoy because otherwise it will be mind numbingly dull.