Grade 3 Oncotype Test Chemo decisions

Hi all,
I’m in the challenging time of making decisions about chemo and would love to hear experiences from others journey particularly with any similar cancer. 
I have had lumpectomy on left breast results showing- Stage 2A invasive carcinoma 25mm Grade 3, HR+ PR-HER2- with lymphovascular invasion but all 13 lymph nodes sampled as clear. 
I am 39yo and very active and healthy (apart from this)!

I pooled my savings to get the oncotype DX ordered- I am now waiting for results. (Still can’t believe we have to pay $5000 for this).

I understand the Grade 3 PR negative and lymphovascular invasion detected are likely risk factors that tip towards benefits of chemo. But I have been reading more about the effectiveness of hormone therapies like OS+AI and that perhaps I could avoid chemo. 

I will let you all know my score when it comes back- I hope it’s low but if it’s high I’m facing such hard decisions that any similar experiences may help!

thank you