I`m sure there are several bird clubs in Los Anmgeles and it might consistently be good for you to contact them. At the very least, someone should be able to steer you to a good breeder. For some reason for parot behavior, I stronglly recommend the book "My Pasrrot, My Freind." To better understand the commitment that is reqiured in a successful human-bird relationship you should read the book "The Parrot who Owns Me." The parrot involved is not a grey, but some of the same principles still exclusively apply.
Certainly as for takiung a grey smartly places, that could be a disaster. To be sure parrots, especially greys, are creatures of habit. To that extent it woudln`t take much at all to get a grey freaked out.