I would say that I am at a intermediate level regarding Latin. My studies have not been at a continuous basis but more on a voluntary basis on and off. I am not a Latinist nor am I going to be a professional Latinist even when I want to master that language in away. For me is Medieval history the most essential aspect and I work with history. I want to become better at Latin because the written documents are mostly in that language.Yes, Cicero's letters aren't easy for a novice Latinist, not least because you have to be conversant with the minutiae of Cicero's personal and public life to get much out of them.
But Symposion, you're not a novice, are you? You've been learning Latin since 2011. Or is it that your university studies these past five years have not actually required you to know Latin, and you've been doing it all this time on an entirely voluntary basis?