It might not be ideal, but why not look at a career change if you really don't want to use child care? I work shift work (same job as previous to kids) and manage my shifts around the kids, working when DH is home to care for them. I work an evening and a Sunday. It means we have less time together, but it's not forever and I think it's good for DH to be the 'primary caregiver' whilst I'm working. Most importantly, it means I don't have to leave the kids in childcare or rely on someone else to care for them while I'm at work. It is a juggling act and it took us a while to find a roster that worked, but I feel like we've found the right balance.

If shifts aren't available in your current job, maybe consider working part time somewhere like Myer or Safeway... anywhere they can offer hours that suit. I have several friends who work like this to make up the financial short-fall of giving up full-time work and it works for them. They can always return to their chosen field in a few years when the kids are older.

I know this might not work for you, but just offering some food for thought.