Great that you have clear margins @tarshy ... bummer they found some in the nodes. ... All the best with the Onc re possible chemo xx. Make sure you record it all, so that you can go over it again later on ..... you can never remember everything that was said on the day.
Sadly, there is no guarantee that any of the various BC cancers won't 'come back' ... but as ILC is often considered a 'slow growing' one .... it 'may' come back in 10-15 years - but also, it may NOT! ;)
So I reckon ... just get everything done that you need to have done treatment wise - and then get your life back & tick off all the 'bucket list' things & family things .... and enjoy xx
take care xx