Not programming languages, of course :P

I've always been fascinated by different languages and cultures. Currently, I'm fluent in English because I was born and grew up in America and I'm semi-fluent in Spanish after taking 4 or so years of it in school.

I'm thinking about taking two language courses next year in my Junior year. Have any of you guys done this before? Would you recommend it? I'm planning on taking AP Spanish and Japanese 1. I've always wanted to learn Japanese, after all.

So my question to you guys is, would you recommend this? Is this a good way to learn language or will it just confuse me? Have any of you tried this sort of thing?