Hi @luciarose23,
It's actually quite common for most people to take Spanish and English Literature together in their A-Levels, popular career options with these subjects include: translator, copywriter and language teachers. In terms of university course options, you could be looking at English language and Literature, Latin American Studies, International Relations (and/with Spanish).
However, if you're good and enjoy geography at GCSEs, I'm sure you'll excel just as well at it during A-Levels. A-Levels tend to be an extension of what you've learnt in GCSEs, but with a lot more detail and content obviously. If you're worried about the memorisation aspect of the subject, there are so many revision techniques that should help you tackle that concern such as flashcards, cornell note method, and blurting. You can read all about revision tips and techniques here:
https://bit.ly/3uCzvZl Ultimately, I think you should start considering which career pathway you'd like to take and pursue in the future to further help you decide which third subject you should take.
Hope this helps,
Danish
BCU Student Rep