A level Spanish- How Hard?Watch
I only took Spanish up to AS, mainly cos I was finding doing both French and Spanish together really difficult. Essays are quite a big part of it, but I'm sure you'd get help getting the technique right in class, and you could also practice questions in your own time too. If you enjoy it, you should definitely take it!
Speaking from an AQA perspective languages are really easy if you're good at them (assuming you are with an A* prediction) you get used to essays and even if they aren't your strong point you can make it up with loads of easy marks in the speaking/listening section