All I can advise is do as much reading up on greys as you can and find out as much information as you can.They are a massive commitment and not one to be taken lightly.Is your lifestyle such that you can give constant care and attention? You mention travelling for a month or so at a time,is this the right time for you to bring a grey in to your life? You say your wife will do most of the bonding but one word of warning,it will be the grey who chooses who he/she will bond with.I dont want to sound negative but I just want you to make sure it is right for you and the bird.They are all individual and how they react to another pet cant be predicted,some will accept a dog some wont.Some have great fun calling a dog in your voice and tormenting it lol. I guess the best time to introduce another pet to a grey is when they are very young. Best wishes sheila