Alright, I've just recently started picking up Japanese and due to a stressful college phase I haven't been able to pick up more than the Kanas (I can use them fluently in both reading and writing now) and working myself through 7 Chapters of Genki I (including memorizing the Kanji).
However, I'm finding myself with a shitload of time starting next week and I want to get serious:
I want to learn the language as fast and efficient as possible in the direction of using it naturally in both normal life and the education/work sector. I'm talking about ~8 hours a day I could spend on picking it up.
However, I feel that Genki I is inappropriate for that purpose. Getting a proper course seems to be impossible as well, as they're either aimed at just a few hours a week or damn expensive if you want a private tutor.
Is it possible to reach such a level with self-study? If yes, what's the best approach for excessive time involvement and which books/materials should I get?
tl;dr: I need to pick up Japanese on a natural level as fast as possible. (reading, writing, conversation - just everything) I can spend a high amount of hours every day. And I'm lost in how to approach it.