Welcome. Boy, you don't let the grass grow under your feet, do you?? LOL
I think you will be much happier if you can find a good breeder within driving distance from you. That way you can visit the baby as it is weaned and get to know it and it you before it comes home.
Get a cage as large as possible. The bird should be able to stretch its wings inside the cage. Toys and foraging items enough to play with, but not so many as to block the birds movement.
Have you done research into other parrots? If so, why did you decide on a Grey? Are you going for a TAG or CAG? Or maybe it doesn't matter to you.
Enjoy your time researching!