That's funny Valeria...
If you follow my method, you'll find yourself immersed in that language without the need to be "corrected", initially and you would be reading, writing understanding and speaking in a short period of time as opposed to years of repeating. What's more, like you said, you have two more language to fall back to plus your native language in order to understand and apply Spanish.
The best of my method is that you can apply it to any language in the world as along as you understand how to look up words in a paper dictionary of that foreign language.