Newly Diagnosed Lumpectomy or Mastectomy? Mom had Triple Negative

Hello everyone, I have just been diagnosed with IDC 0.7 cm grade 3, ER low positive, Progesterone negative and HER2 Negative,
K-67 21-30%. Pathology and Chat GPT say this is a more aggressive tumor. My mother had IDC in her left breast did well with radiation, right breast was Triple Negative had lumpectomy/radiation. She could not tolerate Chemo. This was all in her late 70's. Metastatic disease 2 years ago and we lost her. Genetic test for me is negative. Chat GPT says the specifics of my pathology indicate that my tumor behaves more like Triple Negative.

I have a special needs son who is 40 and I am the only parent he has left. He has health needs and is also learning disabled can't read etc. We do not have a large family. I want the best possible outcome so I can be there for my son for the longest amount of time.

I am debating Lumpectomy Vs Bilateral Mastectomy. I may also need Chemo and preventive Rx afterwards.

I'm interested in other's opinions as how to proceed. I will not see the Oncologist for about 4 weeks he took care of my mom but stays booked. Any help will be greatly appreciated. This keeps me awake at night worrying about it all.