Why does it matter? It shouldn't matter. The Standard Deduction or Itemized Deductions are subtracted from your total income AGI. And this year if you take the Standard Deduction you can take an extra 300 for Charity in addition to the Standard Deduction.
You have the Desktop program. You can switch to Forms and see how it works out. You can even save your return with another name to test in. Open the 1040 and follow the math.
