at higher level would be hard it might be also hard as their isnt alot of asscessiable content. whats the point in starting now? best bet would be just to focus on your subjects now. you can still do classics in uni without doing lc classics
I'd strongly advise you not to, especially if you're doing the 2020 lc. It's already a fairly demanding subject with a teacher, never mind self directed and on top of that, getting all the content you need covered in a few months. You'd be better off concentrating on your other subjects.