I suggest only spending about half of that on textbooks and learning materials, and using the rest for books in Japanese.
Genki I & Workbook
Genki II & Workbook
Tobira
A Dictionary of Basic Japanese Grammar
A Dictionary of Intermediate Japanese Grammar
Once you've worked through that material you'll be more than ready for the easier native reading materials, so use the rest of the money on manga and books for children and teenagers.
Genki I & Workbook
Genki II & Workbook
Tobira
A Dictionary of Basic Japanese Grammar
A Dictionary of Intermediate Japanese Grammar
Once you've worked through that material you'll be more than ready for the easier native reading materials, so use the rest of the money on manga and books for children and teenagers.