Should I do Russian A level?

Im going to do my A levels starting September, and I was wondering if I should do Russian A level as an extra subject by doing some self tutoring. I have already done Russian GCSE and got A* for it. Im origionaly from Ukraine so I know Ukrainian and Russian well. I understand much of russian and I can read it quiet well, i think i would need some practice writing it. So I was wondering would preparing for Russinan A level get in the way, and take a lot of my time for studying for other A levels. So is it much different from GCSE. Also could you give me some links to past papers. Thanks.