Here is a link to FAQs on adoption and permanent care in Victoria:

Frequently asked questions (FAQ): Adoption and Permanent Care - State Government of Victoria, Australia, Department of Human Services

Regards to your weight, there are no 'rules' that your BMI must be a certain number but your health is considered in the selection process. You will have to discuss your particular circumstances with the workers, but it shouldn't disqualify you.

The costs for PC are not as great as for adoption.

Your ages will be beneficial, as they are keen on younger carers.

The education sessions should answer any questions you might have.

good luck,

Kate