With what you have described as being on offer to your soon to be parrot - would you consider taking lodgers instead.
Neal is very correct in stating that birds are by no means routine or predictable. However, it does seem that you have put alot of thought into the birds requirements. Macaws are very big birds, and to have one that you struggle to handle would not be very enjoyable for you. Blue and Golds are very nice birds, but consider Green wings, they in a general sense more sadate, tend to settle easier and are a little more easy to tame from being parent reared - which is what you want, particularly if you would like your birds to eventually breed.
Expecting your pet bird to be a breeding bird is asking alot though, and Macaws can take many years to settle and become ready to breed, they are very long lived birds and as a result, are never really in a rush to do anything.
Children are not a problem with parrots, normally the busier the environment, the more your bird (as a pet) will thrive, observing and taking part in life as it goes by. The Dogs, only you can answer that question, I certainly couldn't trust my Dog, a very exciteable Cocker with a free flying bird in the house - although some of my aviary birds fly down to the bottom of the mesh, and call her name and generally take the mic out of her, which just winds her up more and it's a very funny thing to watch. In short, dogs are hunters, and parrots are curious, not a good combination.
Macaws have a few special dietary requirements as well, needing lots of fruit and a slightly higher fat content in there diet - nuts basically.
The PSUK put on 3 shows a year, at Stafford county agricultural show ground just off J14 M6. the next one is in July, this is a good place to see and purchase birds - you will see many different specie of parrot which will be a real eye opener for you. We also have a monthly magazine which has adverts in - but you need to be amember to access these.
If you want a pet bird, then get one parent reared and just weaned - this may involve waiting until one turns up, but stay away from Hand reared birds, they are more expensive and can be more emotionally unstable and very tempremental if you stop giving them undivided attention.
Please feel free to ask any more specific questions
Council Member - PSUK.
If God had intended man to fly, He would have given us wings. Instead He gave us Parrots.