" Is it true what one of the other replys say can you request them to send the documents by a certain time?"
You are an independent contractor and you can do whatever you like. Some companies will agree to your terms, and some will not. It is a choice you have to make and be willing to deal with the consequences, good or bad. Having a deadline works very well for some and not very well for others. You need to know what your market area will bear(sp).