The most important thing is that you keep up with the work. Just like all subjects, if you fall more than a few classes behind, the workload becomes quite large. It should be one of the easier subjects you take during your degree, and I think you should absolutely do it! You'll be fine, especially if you have a little interest in learning languages already (:
The assignments are usually small (e.g. 300 words) which is quite easy to do if you elaborate a lot. i.e. if the assignment is about describing your family, don't just say 'My family consists of two sisters, a mum, and a dad.' Elaborate by saying 'I have an older and a younger sister, one is 20 years old and studies x, the other is in year 10 of high school and enjoys playing netball...' Do you see how quickly that one sentence summarising your family turned into a larger one that only spoke about your hypothetical sisters?
Being able to study a language is a wonderful opportunity so I would definitely encourage it !