Hiya!
Definitely agree that EPQ is a great environment to learn about referencing and Bibliographies (USE MYBIB!) because of the direct support from an EPQ teacher, which you would not necessarily get as much in uni. I would still consider putting it on your statement honestly, even if you don’t necessarily need it because unis like to see a sustained interest in specific areas of your topic, if you end up getting a Cambridge interview, your EPQ could be a helpful and easy discussion point. EPQ has been fantastic for me in my applications as a lot of my unis did interviews where they mainly asked about it and I have developed a new area of interest and expertise!
Obviously, it’s not always useful for everyone but most people I know got lowered offers if they got an A (or in some cases just a pass!) because of EPQ.
I will say most people end up doing the majority of the workload in Year 12 summer anyway which works really well but as you’re an early applicant I’m assuming you would be handing it in before the early application deadline, which isn’t lots of time. DEFINITELY manageable as EPQ is honestly not that many words or anything but what I will say is that Autumn Year 13 is an EXTREMELY stressful time, I absolutely hated it and EPQ definitely could feel like a burden when you’re in the middle of applications and mock exams.
I’d still say it’s worth it in the end but I cant lie, Year 13 can be a really intense time and you shouldn’t take on too much if you don’t have to! if you want to do an EPQ in Year 13 do it because there’s a topic you genuinely want to explore, rather than the other aspects because finding a deep interest in your topic will make it SO much easier to get through!
Based solely on your uni options you seem like you’re probably very hardworking and I’m sure you’ll be fine doing EPQ, but equally things like references will sort themselves out once you get to uni if you don’t end up figuring them out now.
Sorry if that’s not helpful/contradictory in places 😭 basically Id say definitely see if you can pick it up, I’m sure you’ll be fine but worst case scenario you can always drop it with no harm done!