@crafty Welcome (unless I've already welcomed you in which case just put it down to chemo brain). The other ladies have already given you the good advice. How old are your kids? If they're really little it can be hard for them to help but if they're older you may be amazed at what they are able to do. Mine were 11, 12 & 15 at time of diagnosis - it's a year on from that now and they have been wonderful.
You need to focus as much as possible on yourself at the moment as you probably don't have the energy to do too much else. The income protection does take a weight off when it comes through. I would suggest (based on my own experience) to give yourself some time after active treatment to recover before rushing back to work. I finished in September and went back at the beginning of this term. I desperately needed to mental stimulation but physically, I wasn't ready. Not that that probably matters yet for you but keep it in mind.
Chemo is doable but it is a hard slog so be kind to yourself and get as much rest as you can. On the other hand, you will find it beneficial, both for treatment, better recovery and mental health, to join a specialised exercise programme if there is one available near you. Otherwise, go to see an exercise physiologist who specialises in oncology (health care plan should be available for this). If you let us know whereabouts you live, someone here may be able to help you.