Do I need to include the 1098 information if Turbo Tax has already determined that the Standard Deduction is best for me?

It is not possible for TurboTax to determine whether the standard deduction or itemized deductions are best for you until you enter all the itemized deductions. However, if you think the standard deduction will be better, you don't need to enter the itemized deductions.

Yes, if it might benefit you on your State return.