Thank you all for your input! I do plan to think on it for at least a few more months while I learn and scour rescues, and y'all have given me that much more food for thought. I have a good friend who owns a Grey, although I've never been to her house to meet him, maybe I should see what I could do to visit him and/or pet-sit before I make up my mind about getting one. Most of my Grey experience so far has been babies at my local bird shop, as well as articles and YouTube videos, (Mostly the pro/con ones such as "Are you ready for a parrot?") so it would probably be good to get more "hands on" experience with adults.
My friend would probably also be able to care for the bird for a few weeks, months, or years if something happened, so I could sort my life out. Even at this, I would still try to visit my Grey at least weekly. Overall I have a good network of support, between parents and friends, if something were to happen. My parents are on board with the idea, and are willing to help care-wise and financially.
Again, thank you for all your help and suggestions, and I hope to become an active part of the community here!