Does TurboTax standard allow for both T4 and self employment income entry, and be able to deduct expenses for the self employment portion?

Yes, TurboTax allows for situations where you have both T4 slips and self-employed income.

That said, if you received a T4 from Skip the Dishes because you are considered an employee, and you wish to deduct motor vehicle expenses, you need to enter these expenses on a T777 Statement of Employment Expenses.

For the self-employment reporting, you need to report if on a business form (e.g. T2125).