W2 or 1099 employee?

Hi, i will apply for renewal in a few months. Currently I don’t have any employees but i have a store that’s only open on weekends and found someone to work there.

For the renewal, should i employ her with the payroll, or will the 1099 be enough? The working hours sometimes change, therefore the money she will earn, that’s why i wanted it to be 1099 for more flexible payments. Is there a big difference in the E2 process?