Hi Jo welcome to this wonderful group of women!! This site was and still is my lifeline and you will always find someone here with a similar story, some useful information or just a hug when you need to vent...
I am 6 months post bilateral mastectomy, and although I was lucky enough to avoid chemo and radio, my niece who did both juggled her business as a osteopath around treatment and has since returned full time.
I think the important thing will be to set some realistic expectations and juggle your workload to suit how you feel...
I would imagine word will travel fast about your diagnosis and for the most part people will be helpful and accommodating around your treatment.
I hope it all goes well for you and make sure you keep coming back here - all the pink sisters are a wealth of information in relation to managing side affects and personal experiences.
It will be a roller coaster so be kind to your self - accept the help that is offered and ask when you need help... You are not alone
Big hugs
Chrisxxx