If you haven't already done so, head on over to the Learning Center...you'll find lots of articles there to review and hopefully, will help answer your questions. Here's a link to take you there:learning-center.11
Glad you could join us here! Our learning Center is a great place to check out ~ https://www.backyardchickens.com/articles/category/learning-center.11/
Lots of very helpful articles there on all aspects of keeping your chickens happy, safe & healthy.
Also there are lots of very helpful members here who can answer your specific questions.
Thank you for posting the link, I am genuinely excited about raising these two little feathered friends and have fallen in love with them already, I just want to give them the best care possible and after finding this site im sure it will be a doodle. (hopefully)
Welcome, I’m sure you will find a lot of help here and you will be on your way with raising your chicks. Somewhat jealous.... I don’t believe that you can get cemani chickens in Australia and they look amazing.
There's a thread on ACs that may interest you - just use the search function and it should pop up.
Including your general location, under your avatar will help other members to give the best advice possible for any future input / questions that you may have.