Mr. Pjiang and other XDJM, please help

How to fill I-131 Part3,
1, Date of Intended Departure
Can I fill in 06/01/2009 Or any dates 2-3 month later?
and
2, Expected Length of Trip
Can I just fill one month\' or two months or three months?
I have read your BLOG but is still confused. Can you please answer this?

thanks