Good, glad you are a never smoker. Surgery followed by radiation may allow a smaller radiation dose than if it were the primary modality. If they see anything that worries them during / following surgery (e.g., not getting clear margins) they would have the option of adding chemo to the radiation. The small tumor size, the fact that it is HPV-related, and your non-smoker status are all very encouraging.
Very best wishes to you.
Maria