Well, only you can really answer this question. There are many members who work 5 days a week and have a very wonderful relationship with their greys. You need to analyze your day and your commitments each day. Do you have the time and desire to spend at least 4 hours a day with your grey out of his cage? Greys need interaction and time to stretch their wings and their minds. I don't mean sitting watching your grey I mean around and close by so that you know what he is doing and where he is. A grey can destroy furniture, computers, electrical chords... just about anything they set their mind to destroy. Greys are very messing beasts, their cages need to be clean and their food fresh and replenished every day. Some greys mess up the water with food and poop and whatever. You have to be ever vigilant because your grey's life depends on it.
How have you been with other pets, a dog or cat, have you ever been responsible for a hamster or fish? When my kids were young I started them small with a goldfish then a hamster. Have you ever been responsible for a younger sibling, and how did that go? A grey or any parrot is a real commitment and one that can last years and years and years. Do you really want to commit to such a burden and responsibility at such a young age? Perhaps a canary or parakeet would be a better first choice just to see what it is like to care for a bird.
Think about it and read, read, read the many different things in these threads that members have problems with and need help with concerning their greys. Are you ready for these things?
I commend you for asking questions and I hope you find your answer.