Rally and obedience are fun, but not many ethical breeders take them seriously. A proven agility or herding dog will attract the sport people. Proving him in the show ring will attract the show people. Proving him in the show ring and in the field (herding) will definitely attract the show...
They seem to only have FB. Oh well
For the best advice, you should ask your breeder. Since you said he comes from good bloodlines, his parents, grandparents, and such have been proven
Good luck in the show ring (guessing AKC)!
Prove him in the show ring and get his OFA done, and if all that checks out, then you could definitely consider having him available in case any ethical Aussie breeder wants to use him in their programme!
What's his breeder's kennel name?
Went for the unconventional one (I do actually know some things about parrots, unlike horses)! How old is he/she? Umbrella cockatoos are my second fave cockatoo species!