what now??

Hello, I had some good news today - all 14 nodes form axillary clearance were clear . So what happens now? There were 4 removed at time of mastectomy, one sentinel and one intramammary had cancer cells in them, 2 others were clear which is why I had further axillary surgery.
I have an appointment with an oncologist to discuss chemo, I know my tumours were HER2 and E+ so will need hormone treatment.
Any ideas as to what questions I should be asking the oncologist ??? !