Well given all the information & facts about yourself any kind of bird I'm afraid is not for you & definately not a parrot.Owning a grey is a lifetime commitment, you have to be 100% committed to providing for your greys needs throughout your lifetime, to say the least,a good quality diet, a large cage,plenty of social interaction, time spent out of the cage,stimulation, veterinary bills to name a few the list is endless.
Have a read through this...
http://www.greyforums.net/understanding-your-grey/a-parrots-bill-of-rights..html
I think your own sentence " Oh, and I don't want the responsibilities to disrupt my studies " gives you the answer to your own question
Sorry just my personal view on your situation.