New diagnosis today - Stage 2, grade 3, Invasive Breast Cancer

My results today showed I have Invasive Breast Cancer stage 2 grade 3 with oestrogen positive progesterone positive and HER2 receptor positive. My lump is measured at 4 cm with some dispersed but in the left breast. They have saiid due to my age they would offer chemotherapy for 6 months followed by lumpectomy and then radiotherapy treatment. So looking at 9  to 12 months of treatment.they plan to take 2 limp nodes out as well.i have to have injections at the same time as chemotherapy due to blocking the receptors. The plan is that I need CT and MRI scan as well as a heart scan, and they want more tests and an appointment with oncologist and to start the chemo very soon within 3 weeks they hope.