I'm not trying to be harsh, but I do want to give you my honest opinion. I agree with some of the other people in this thread: it doesn't sound like a parrot is the right pet for you. I'll list the reasons just so you know why I have this opinion:
1. You list "speech ability" as a main concern, but as other people have said, some Greys and Eclectus never talk. Yes, a talking bird is very entertaining but that in and of itself is not a good reason to get a bird.
2. You also list "indoor voices" as a main concern. Greys and Eclectus are loud. If you want a bird with an "indoor voice" you should really look at smaller species.
3. "Coloring" is listed as your third priority but both Greys and Eclectus are notorious for plucking. Many of them do not pluck but it is a very real consideration that you may end up with a bird that is partially or completely bald and no matter what you try, you can't stop it. You know who Alex is so I'll use him as an example of a bird who had a very rich and mentally stimulating life who still plucked, anyway.
4. You list "cleanliness" as a consideration and birds are some of the messiest animals you could possibly own. You will have to clean up bird droppings every day, as well as "spot clean" the cage. Birds fling food all over the place so you will also have to "spot clean" your walls, carpet, furniture, etc. depending on how far the food flies. I really cannot emphasize enough how messy they are when they eat. They also shed dander constantly so you will have a fine layer of "dust" all over the place and will have to vacuum frequently.
5. African Greys can live from 50 - 70 years. Eclectus live 30 - 50 years. You may want a bird now, but what about in 10 years? 20 years? 30 years? 40 years?
On the upside, you say that you're usually home for 12 hours a day so that is good, and it sounds like you have enough space and have budgeted enough for a large cage, toys, etc.
That being said, I again what to say how great it is that you've been doing your research and this is just my two cents on the matter.
As others have stated, if you do end up deciding to go forward with this, seriously consider adopting a re-homed bird. Both of my birds are re-homed and not a day goes by where I don't feel so happy that I was able to give them a good, loving home.
Have you considered a Quaker parrot? I had a Quaker growing up and he was a great talker. He knew many words and would use some of them in context. He also sang several songs. His name was Pookie and he would sing, "How much is that Pookie in the window? The one with the waggly tail. How much is that Pookie in the window? I do hope that Pookie's for sale!" He was also very affectionate.




