Sorry to hear you diagnosed. With a big family the three main things you may find hard or impossible at times is main meals (do up frozen ones or line up neighbours or family to drop meals in), washing and hanging out clothes (get the older kids to do it or stand on a box to reach the line like I did sometimes as the arm after surgery won't reach up for a while), and making up beds (get the kids to help you tuck in the sheets).
I was public hospital in coast of Qld and it was 3 weeks from seeing the surgeon to actual surgery (if you are having surgery first). I also needed a second op due to it spreading to the lymph nodes under my arm and that was another 3 week wait for surgery. Ask the surgeon if you can have a portacath put in your chest vein as it will make everything a whole lot easier on your poor veins.
Chemo if you require it is usually done in 3 week intervals. One day to give it and 3 weeks recovery. It may be best if you can take a week off work every 3 weeks. Do you have holidays you can stagger into one week off and 2 weeks on? At work stick to the normal duties and don't get creative. Your brain will get a bit fuzzy sometimes. To combat infection from kids at work, suck an antibacterial Strepsils a few times a day.
Well wishes for you on your treatment.