You can't be functionally fluent in one year. Sorry to burst the bubble, but you can't. To be fluent in any language you'd need to know, what, 10,000+ words? So you'd have to learn 10,000/365= at least 27 words a day. And grammar, and a lot of idiom, and then you'd have to train yourself to stop thinking in your own language, and get a lot of practice.
Pravit is one of the most succesful Russian learners on this board who's been studying on and off for 4 years now. He isn't fluent. He's good, but he isn't fluent. Even my Russian teacher, who's studied Russian at a prestigious university for 7 years, who's been to Russia for months at a time and for numerous times in those 7 years, and who's got a Russian girlfriend, says he isn't fluent. He's very good, but not fluent.

Sorry to break the news, but you can only reach any level of fluency by surrounding yourself with people who only speak the language you want to learn.