This site might seem negative to many folks who read it, but understand the collective wisdom of folks who have lived with Cockatoos for many, many years resides upon these pages.
You can have the patience that would rival Ghandi and I promise you, your new feathered buddy is going to push them to their limits on some days.
Like has already been stated, a juvenile bird is nothing like their adult self. Though, getting the routines in now will certainly help you in the long run so you both know what to expect.
At a minimum, Peaches will need to be out of her cage for a few hours every day. ( 3-4 at least ) If someone is home, they don't grasp the concept of " your time ". If you're home, your available for play and if you ignore him/her, you're gonna hear about it. I know you said you can handle vocalizations, but you'll understand what we're talking about soon enough.
I have heard Tic-Tac from up to a quarter mile away. It is impossible to ignore as sound that loud completely overwhelms everything you're doing.
You are going to get bit. It is inevitable. Whether it's hormonal, aggression or an accident when getting wound up while playing with a toy, it happens. It also hurts like hell. lol
Come to that realization right now and know how to respond to it when it does happen so you don't reinforce the behavior.
I like to think of Cockatoos as having a Jekyll and Hyde personality. One moment they're peaceful, content and cuddly and the next they're ripping the buttons off of your remote control, pooping on the cat and absolutely losing their mind at the insect that managed to get in the house and is flying about the room.
As to that backpack . . . .
You'll learn soon enough that the more expensive something is, the faster your new friend will attempt to dismantle it
Do not discount the advice given here. You will not find a better place to lay things out as they are without sugar coating them.