Do I choose surgery or chemo first?

I had a grade 3 stage 2 6cm lump in my right breast. I'm  only a small B cup so mastectomy was the only choice for me straight  up. I was offered the choice to do chemo first in the hope i might get away with  just a lumpectomy. After doing six months of poisonous shit chemo failed to have any impact on me whatsoever. When i had my mastectomy my tumor was 9 cm and had grown 3cm in six months. We are all different and respond differently to treatments. The plus side of doing it first is now knowing if i have a recurrence a different chemo would need to be used as the gold standard AC and Paclitaxil won't work and have been told that by my team. I'm very glad now i did it first as otherwise there would be no way to tell for sure if chemo worked. All the best in making your decision.