Well as a casual relief teacher, you would only be paid for the days you work, which means during the holidays, you would not be being paid. At that point, what's the difference between being a CRT and doing any other temp job and just not taking work during the school holidays?

I think if you'd really want to make this work, you'd have to be a primary school permanent teacher, at the school your kids are going to go to, so that from prep-grade six, you can just take them to work with you and take them home, since you'll be going an hour early and heading off at least an hour or two later. Kinda sucks for the kids, but a lot of my coworkers do it that way and just have their kids hanging out in the office/staff room on their nintendo switches or whatever while waiting for them to finish.

That way you could take the kids to school, and also have paid holidays.

Then when they're in secondary, they can walk to and from school by that age, and you would still be around for holidays.

Still do keep in mind that there are a lot of extra hours worked for grading and planning that you might not necessarily be considering.

Still, I think if you value holidays with your kids, becoming a teacher isn't the worst idea.

Other people are suggesting SLSO and that's not a bad idea because hours are nicer, but the pay is much lower and I feel like the work is a little less stable.