This is a complete no brainer. No contemplation needed or considered. I teach, and I'm addicted to my job.
I'd head straight to Milligan's News (a wholesale bookseller in San Jose) and buy LOADS of books for my classroom. New titles, picture books, literature sets, and a dictionary for every kid. I've gone and spent $600 without blinking an eye (and that's of my own money). I can spend yours faster.