I'd suggest you do some 'parrot sitting' first, look after someone's parrot for a while to see if it is something that you will really like. A lot of parrots get bought as impulse buys by people who have absolutely no idea what it is like to actually have a parrot and to have to take care of it.
Yeah, that's always the right answer. I've gone through this mental exercise multiple times before -- I want to get a parrot! But they live a long time and are extremely intelligent. They're very independent and when they are unhappy can become destructive. Am I a good enough beast-keeper to pull that off? Not really. I agree with you that parrot sitting is a smart idea.