I was in the same dilema. Send your bank statements or if you work send your taxes. Don't send anything with a fake social though. The taxes should have your Itin.

For statements send starting 2007 January and July of every year after that. The bank should provide them for free but hurry up because they take a week to arrive.

Print the copies at a kinkos or staples. Less thank $5 is not a lot. Don't do it at home, youll kill your ink