Unfortunately there’s no reliable way of telling how you will react to chemo beforehand. So an A and B plan if you do have chemo is sensible. I had six months of chemo and worked happily throughout - no nausea or fatigue. My own course was to do what my oncologist recommended - he knows much more about cancer than I do. I did have one affected node. It’s perfectly reasonable to ask your oncologist what additional benefit chemo will provide. Just remember that if it only improves your chances of recurrence by a few points, you have no real way of knowing what side of the ledger you are on! Best wishes whatever you decide.