Documents Required for VWP Student Traveller?

Hi There, I checked out heaps of forum and websites that What Documents should I Bring in Immigration when I arrived at US Airport?

I am still an uni student, living with my parents. And the course lasts for only one semester. I know I should bring some documents that has strong ties with my Home Country, Australia for example. Here are my suggested documents I must bring:

Return Ticket (39 days), Passport, Esta Hard Copy, US Address, Bank Statement, Sufficient Cash, Credit/Debit/Travel Card, Travel Insurance, Health Insurance, Hostel Reservation, Travel Documents for Contiki, Bills (Health, Phone, Car, etc), Police Check (To confirm no Criminal Record under VWP), student ID Card/Enrollment Letter, Employment Letter(Long-term Casual/Part-Time job) and tax Return 2012 from ATO.

Are these enough to satisfy the CBP officer that you are a true traveller and stay in the US for very short period??? Any additional documents do you suggest?

Please help!