Items 3 and 4 are unnecessary.
No one needs to check if the form is accurate, once it is finalized and issued by the IRS. It is IRS's responsibility and what they have done with it. Trust them for your customers' sake.
Further, why do you have to have final approval from the IRS? Know that they DO NOT CHECK your software code. May be compatibility. Then why doesn't TurboTax advise me to file by mail?
