Hi and Welcome to the forum,
IRNs are great birds.
I saw you posted on another thread, I don't want to take that thread off topic so I will reply here.
Kimma wrote:I'm curious about the really early milestones.
I'll be getting my bird when zie is almost 6 weeks old. Will zie be able to climb and perch by then? If not, when do they get strong enough/learn to do that? About when do they learn to fly?
Will I need to get a bed/box for hir?
I'm thinking now I better keep a baby book to record all this stuff

I would highly recommend that you get the breeder to raise and fully wean the bird before you take it home. There are many benefits to the bird by being raised around its own kind, as well as less stress for you. That is disregarding the fact that it is not legal to sell unweaned baby parrots in qld.
My personal experience with birds started with getting a 3 month old iRN for my boyfriend last year. Our bird (Nila) has accepted us very well and prefers us over anyone else. Hand raising them personally will not develop any more bond with your new bird than you will have after it has been weaned fully.
Brisbane has a great parrot society
http://www.parrotsociety.org.au/ and their store is pretty well priced if you are a member.
All the best.
Claire