JMBal

I am now filing my I-539 as my job and TN will expire next month. I had a question regarding "what arrangements you have made to depart from the United States". Is a copy of my new month-to-month apartment lease sufficient? Or do I need something more concrete like a plane ticket reservation and bank statements to show I can support myself during the extension? I am just looking for examples of what is enough proof...

Thanks so much this is a great board!