That would work if all information is available in English as the primary language. That's not the case though. You may be missing out on interesting information if you're skipping other languages.
Llama 65B is actually quite decent in other languages. I can just barely fit it in memory though with my 128 gb ram. Usually I run the 8 bit quantized version that use 80, but even the 4 and 3 but are ok compared to the fp16 30B version.