You don't have to create two returns in your case. Send the Federal and the next day add schedule A and prepare the state return. If the federal is rejected for any reason, you might have a problem because the federal return will not be the same. To avoid that mistake, wait for the Federal to be accepted and then add schedule A.
The IRS couldn't care less in this situation BUT most states have a rule that if take the standard deduction on the Federal, you must take the standard deduction on the State. (I might be wrong).