The other selectee in my division had a snag with the paperwork - seems that there were a couple of minor details missed by the HM's that were processing the paperwork. Make sure that you scrutinize every detail of the paperwork before you mail it in. It will save you the minor headache of having to run around and have any errors fixed.
Are you kidding? Most of us have been emailing and faxing...waaaay faster! If its during east coast working hours its basically immediately updated as soon as you send it to them.
But yes I would recommend proofing anything you send. I already had to make one pen & ink on my degree plan because I incorrectly transposed a course description/course ID. So I got a nastygram back saying I needed ethics. But in reality I just wrote the wrong thing in.