I have done well with my JLPT N5 after one year of self study. I have studied around 120 Kanji so far, want to speed up now. As far as grammar is concerned, I have covered 25 chapters of Minna no Nihongo.
I intend to resume and infact, pace up my Nihongo studies, as am moving to Japan next month (Finally, the dream has come true.)

To re-inforce my concepts, and continue I am considering buying Genki textbooks. But, I do not have any teacher. Please guide me if it is better to study Minna no Nihongo lessons all over again, or to go with Genki, which I think will make things more interesting as I will get new kaiwas and situations. After finishing Genki, I believe I will advance to intermediate texts with a solid foundation.
Another question is that, I am getting a used copy of Genki first edition, reprint in 2004. Should I go with that or buy second edition ? I do have saved some money for the second edition, and can afford if they are worth it.
Please guide me. よろしくお願いたします。
Regards !