TurboTax does not support fiscal year filing. There is no way to enter the start and end dates of your fiscal year. All the calculations are based on a calendar year.
If you file by mail, you do not mail all 100 or so pages of the PDF. You mail only Form 1040 and any forms that have an Attachment Sequence Number at the top right. Note that some forms, including Form 1040, are more than one page.
